656890000

素因数分解:

$2^4\times 5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:235

約数の個数: 200

約数和(自身を含む): 1778830592

約数和(自身を除く): 1121940592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 40, 50, 52, 62, 65, 80, 100, 104, 124, 125, 130, 155, 163, 200, 208, 248, 250, 260, 310, 325, 326, 400, 403, 496, 500, 520, 620, 625, 650, 652, 775, 806, 815, 1000, 1040, 1240, 1250, 1300, 1304, 1550, 1612, 1625, 1630, 2000, 2015, 2119, 2480, 2500, 2600, 2608, 3100, 3224, 3250, 3260, 3875, 4030, 4075, 4238, 5000, 5053, 5200, 6200, 6448, 6500, 6520, 7750, 8060, 8125, 8150, 8476, 10000, 10075, 10106, 10595, 12400, 13000, 13040, 15500, 16120, 16250, 16300, 16952, 19375, 20150, 20212, 20375, 21190, 25265, 26000, 31000, 32240, 32500, 32600, 33904, 38750, 40300, 40424, 40750, 42380, 50375, 50530, 52975, 62000, 65000, 65200, 65689, 77500, 80600, 80848, 81500, 84760, 100750, 101060, 101875, 105950, 126325, 130000, 131378, 155000, 161200, 163000, 169520, 201500, 202120, 203750, 211900, 251875, 252650, 262756, 264875, 310000, 326000, 328445, 403000, 404240, 407500, 423800, 503750, 505300, 525512, 529750, 631625, 656890, 806000, 815000, 847600, 1007500, 1010600, 1051024, 1059500, 1263250, 1313780, 1324375, 1630000, 1642225, 2015000, 2021200, 2119000, 2526500, 2627560, 2648750, 3158125, 3284450, 4030000, 4238000, 5053000, 5255120, 5297500, 6316250, 6568900, 8211125, 10106000, 10595000, 12632500, 13137800, 16422250, 21190000, 25265000, 26275600, 32844500, 41055625, 50530000, 65689000, 82111250, 131378000, 164222500, 328445000, 656890000]

約数ペア:

[(1, 656890000), (2, 328445000), (4, 164222500), (5, 131378000), (8, 82111250), (10, 65689000), (13, 50530000), (16, 41055625), (20, 32844500), (25, 26275600), (26, 25265000), (31, 21190000), (40, 16422250), (50, 13137800), (52, 12632500), (62, 10595000), (65, 10106000), (80, 8211125), (100, 6568900), (104, 6316250), (124, 5297500), (125, 5255120), (130, 5053000), (155, 4238000), (163, 4030000), (200, 3284450), (208, 3158125), (248, 2648750), (250, 2627560), (260, 2526500), (310, 2119000), (325, 2021200), (326, 2015000), (400, 1642225), (403, 1630000), (496, 1324375), (500, 1313780), (520, 1263250), (620, 1059500), (625, 1051024), (650, 1010600), (652, 1007500), (775, 847600), (806, 815000), (815, 806000), (1000, 656890), (1040, 631625), (1240, 529750), (1250, 525512), (1300, 505300), (1304, 503750), (1550, 423800), (1612, 407500), (1625, 404240), (1630, 403000), (2000, 328445), (2015, 326000), (2119, 310000), (2480, 264875), (2500, 262756), (2600, 252650), (2608, 251875), (3100, 211900), (3224, 203750), (3250, 202120), (3260, 201500), (3875, 169520), (4030, 163000), (4075, 161200), (4238, 155000), (5000, 131378), (5053, 130000), (5200, 126325), (6200, 105950), (6448, 101875), (6500, 101060), (6520, 100750), (7750, 84760), (8060, 81500), (8125, 80848), (8150, 80600), (8476, 77500), (10000, 65689), (10075, 65200), (10106, 65000), (10595, 62000), (12400, 52975), (13000, 50530), (13040, 50375), (15500, 42380), (16120, 40750), (16250, 40424), (16300, 40300), (16952, 38750), (19375, 33904), (20150, 32600), (20212, 32500), (20375, 32240), (21190, 31000), (25265, 26000)]