420409600

素因数分解:

$2^8\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:233

約数の個数: 216

約数和(自身を含む): 1163869952

約数和(自身を除く): 743460352

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 124, 128, 130, 155, 160, 163, 200, 208, 248, 256, 260, 310, 320, 325, 326, 400, 403, 416, 496, 520, 620, 640, 650, 652, 775, 800, 806, 815, 832, 992, 1040, 1240, 1280, 1300, 1304, 1550, 1600, 1612, 1630, 1664, 1984, 2015, 2080, 2119, 2480, 2600, 2608, 3100, 3200, 3224, 3260, 3328, 3968, 4030, 4075, 4160, 4238, 4960, 5053, 5200, 5216, 6200, 6400, 6448, 6520, 7936, 8060, 8150, 8320, 8476, 9920, 10075, 10106, 10400, 10432, 10595, 12400, 12896, 13040, 16120, 16300, 16640, 16952, 19840, 20150, 20212, 20800, 20864, 21190, 24800, 25265, 25792, 26080, 32240, 32600, 33904, 39680, 40300, 40424, 41600, 41728, 42380, 49600, 50530, 51584, 52160, 52975, 64480, 65200, 65689, 67808, 80600, 80848, 83200, 84760, 99200, 101060, 103168, 104320, 105950, 126325, 128960, 130400, 131378, 135616, 161200, 161696, 169520, 198400, 202120, 208640, 211900, 252650, 257920, 260800, 262756, 271232, 322400, 323392, 328445, 339040, 404240, 423800, 505300, 515840, 521600, 525512, 542464, 644800, 646784, 656890, 678080, 808480, 847600, 1010600, 1043200, 1051024, 1289600, 1293568, 1313780, 1356160, 1616960, 1642225, 1695200, 2021200, 2102048, 2579200, 2627560, 2712320, 3233920, 3284450, 3390400, 4042400, 4204096, 5255120, 6467840, 6568900, 6780800, 8084800, 8408192, 10510240, 13137800, 13561600, 16169600, 16816384, 21020480, 26275600, 32339200, 42040960, 52551200, 84081920, 105102400, 210204800, 420409600]

約数ペア:

[(1, 420409600), (2, 210204800), (4, 105102400), (5, 84081920), (8, 52551200), (10, 42040960), (13, 32339200), (16, 26275600), (20, 21020480), (25, 16816384), (26, 16169600), (31, 13561600), (32, 13137800), (40, 10510240), (50, 8408192), (52, 8084800), (62, 6780800), (64, 6568900), (65, 6467840), (80, 5255120), (100, 4204096), (104, 4042400), (124, 3390400), (128, 3284450), (130, 3233920), (155, 2712320), (160, 2627560), (163, 2579200), (200, 2102048), (208, 2021200), (248, 1695200), (256, 1642225), (260, 1616960), (310, 1356160), (320, 1313780), (325, 1293568), (326, 1289600), (400, 1051024), (403, 1043200), (416, 1010600), (496, 847600), (520, 808480), (620, 678080), (640, 656890), (650, 646784), (652, 644800), (775, 542464), (800, 525512), (806, 521600), (815, 515840), (832, 505300), (992, 423800), (1040, 404240), (1240, 339040), (1280, 328445), (1300, 323392), (1304, 322400), (1550, 271232), (1600, 262756), (1612, 260800), (1630, 257920), (1664, 252650), (1984, 211900), (2015, 208640), (2080, 202120), (2119, 198400), (2480, 169520), (2600, 161696), (2608, 161200), (3100, 135616), (3200, 131378), (3224, 130400), (3260, 128960), (3328, 126325), (3968, 105950), (4030, 104320), (4075, 103168), (4160, 101060), (4238, 99200), (4960, 84760), (5053, 83200), (5200, 80848), (5216, 80600), (6200, 67808), (6400, 65689), (6448, 65200), (6520, 64480), (7936, 52975), (8060, 52160), (8150, 51584), (8320, 50530), (8476, 49600), (9920, 42380), (10075, 41728), (10106, 41600), (10400, 40424), (10432, 40300), (10595, 39680), (12400, 33904), (12896, 32600), (13040, 32240), (16120, 26080), (16300, 25792), (16640, 25265), (16952, 24800), (19840, 21190), (20150, 20864), (20212, 20800)]