20878650

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:157

約数の個数: 144

約数和(自身を含む): 62558496

約数和(自身を除く): 41679846

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 25, 26, 30, 39, 43, 45, 50, 65, 75, 78, 83, 86, 90, 117, 129, 130, 150, 166, 195, 215, 225, 234, 249, 258, 325, 387, 390, 415, 430, 450, 498, 559, 585, 645, 650, 747, 774, 830, 975, 1075, 1079, 1118, 1170, 1245, 1290, 1494, 1677, 1935, 1950, 2075, 2150, 2158, 2490, 2795, 2925, 3225, 3237, 3354, 3569, 3735, 3870, 4150, 5031, 5395, 5590, 5850, 6225, 6450, 6474, 7138, 7470, 8385, 9675, 9711, 10062, 10707, 10790, 12450, 13975, 16185, 16770, 17845, 18675, 19350, 19422, 21414, 25155, 26975, 27950, 32121, 32370, 35690, 37350, 41925, 46397, 48555, 50310, 53535, 53950, 64242, 80925, 83850, 89225, 92794, 97110, 107070, 125775, 139191, 160605, 161850, 178450, 231985, 242775, 251550, 267675, 278382, 321210, 417573, 463970, 485550, 535350, 695955, 803025, 835146, 1159925, 1391910, 1606050, 2087865, 2319850, 3479775, 4175730, 6959550, 10439325, 20878650]

約数ペア:

[(1, 20878650), (2, 10439325), (3, 6959550), (5, 4175730), (6, 3479775), (9, 2319850), (10, 2087865), (13, 1606050), (15, 1391910), (18, 1159925), (25, 835146), (26, 803025), (30, 695955), (39, 535350), (43, 485550), (45, 463970), (50, 417573), (65, 321210), (75, 278382), (78, 267675), (83, 251550), (86, 242775), (90, 231985), (117, 178450), (129, 161850), (130, 160605), (150, 139191), (166, 125775), (195, 107070), (215, 97110), (225, 92794), (234, 89225), (249, 83850), (258, 80925), (325, 64242), (387, 53950), (390, 53535), (415, 50310), (430, 48555), (450, 46397), (498, 41925), (559, 37350), (585, 35690), (645, 32370), (650, 32121), (747, 27950), (774, 26975), (830, 25155), (975, 21414), (1075, 19422), (1079, 19350), (1118, 18675), (1170, 17845), (1245, 16770), (1290, 16185), (1494, 13975), (1677, 12450), (1935, 10790), (1950, 10707), (2075, 10062), (2150, 9711), (2158, 9675), (2490, 8385), (2795, 7470), (2925, 7138), (3225, 6474), (3237, 6450), (3354, 6225), (3569, 5850), (3735, 5590), (3870, 5395), (4150, 5031)]