21127600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 120

約数和(自身を含む): 58121280

約数和(自身を除く): 36993680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 25, 26, 34, 40, 50, 52, 65, 68, 80, 85, 100, 104, 130, 136, 170, 200, 208, 221, 239, 260, 272, 325, 340, 400, 425, 442, 478, 520, 650, 680, 850, 884, 956, 1040, 1105, 1195, 1300, 1360, 1700, 1768, 1912, 2210, 2390, 2600, 3107, 3400, 3536, 3824, 4063, 4420, 4780, 5200, 5525, 5975, 6214, 6800, 8126, 8840, 9560, 11050, 11950, 12428, 15535, 16252, 17680, 19120, 20315, 22100, 23900, 24856, 31070, 32504, 40630, 44200, 47800, 49712, 52819, 62140, 65008, 77675, 81260, 88400, 95600, 101575, 105638, 124280, 155350, 162520, 203150, 211276, 248560, 264095, 310700, 325040, 406300, 422552, 528190, 621400, 812600, 845104, 1056380, 1242800, 1320475, 1625200, 2112760, 2640950, 4225520, 5281900, 10563800, 21127600]

約数ペア:

[(1, 21127600), (2, 10563800), (4, 5281900), (5, 4225520), (8, 2640950), (10, 2112760), (13, 1625200), (16, 1320475), (17, 1242800), (20, 1056380), (25, 845104), (26, 812600), (34, 621400), (40, 528190), (50, 422552), (52, 406300), (65, 325040), (68, 310700), (80, 264095), (85, 248560), (100, 211276), (104, 203150), (130, 162520), (136, 155350), (170, 124280), (200, 105638), (208, 101575), (221, 95600), (239, 88400), (260, 81260), (272, 77675), (325, 65008), (340, 62140), (400, 52819), (425, 49712), (442, 47800), (478, 44200), (520, 40630), (650, 32504), (680, 31070), (850, 24856), (884, 23900), (956, 22100), (1040, 20315), (1105, 19120), (1195, 17680), (1300, 16252), (1360, 15535), (1700, 12428), (1768, 11950), (1912, 11050), (2210, 9560), (2390, 8840), (2600, 8126), (3107, 6800), (3400, 6214), (3536, 5975), (3824, 5525), (4063, 5200), (4420, 4780)]