1815671440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71147}}^1$

素因数の和:71200

約数の個数: 80

約数和(自身を含む): 4764070080

約数和(自身を除く): 2948398640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 110, 116, 145, 176, 220, 232, 290, 319, 440, 464, 580, 638, 880, 1160, 1276, 1595, 2320, 2552, 3190, 5104, 6380, 12760, 25520, 71147, 142294, 284588, 355735, 569176, 711470, 782617, 1138352, 1422940, 1565234, 2063263, 2845880, 3130468, 3913085, 4126526, 5691760, 6260936, 7826170, 8253052, 10316315, 12521872, 15652340, 16506104, 20632630, 22695893, 31304680, 33012208, 41265260, 45391786, 62609360, 82530520, 90783572, 113479465, 165061040, 181567144, 226958930, 363134288, 453917860, 907835720, 1815671440]

約数ペア:

[(1, 1815671440), (2, 907835720), (4, 453917860), (5, 363134288), (8, 226958930), (10, 181567144), (11, 165061040), (16, 113479465), (20, 90783572), (22, 82530520), (29, 62609360), (40, 45391786), (44, 41265260), (55, 33012208), (58, 31304680), (80, 22695893), (88, 20632630), (110, 16506104), (116, 15652340), (145, 12521872), (176, 10316315), (220, 8253052), (232, 7826170), (290, 6260936), (319, 5691760), (440, 4126526), (464, 3913085), (580, 3130468), (638, 2845880), (880, 2063263), (1160, 1565234), (1276, 1422940), (1595, 1138352), (2320, 782617), (2552, 711470), (3190, 569176), (5104, 355735), (6380, 284588), (12760, 142294), (25520, 71147)]