21233680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1201}}^1$

素因数の和:1244

約数の個数: 80

約数和(自身を含む): 56340144

約数和(自身を除く): 35106464

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1201, 1360, 1768, 2210, 2402, 3536, 4420, 4804, 6005, 8840, 9608, 12010, 15613, 17680, 19216, 20417, 24020, 31226, 40834, 48040, 62452, 78065, 81668, 96080, 102085, 124904, 156130, 163336, 204170, 249808, 265421, 312260, 326672, 408340, 530842, 624520, 816680, 1061684, 1249040, 1327105, 1633360, 2123368, 2654210, 4246736, 5308420, 10616840, 21233680]

約数ペア:

[(1, 21233680), (2, 10616840), (4, 5308420), (5, 4246736), (8, 2654210), (10, 2123368), (13, 1633360), (16, 1327105), (17, 1249040), (20, 1061684), (26, 816680), (34, 624520), (40, 530842), (52, 408340), (65, 326672), (68, 312260), (80, 265421), (85, 249808), (104, 204170), (130, 163336), (136, 156130), (170, 124904), (208, 102085), (221, 96080), (260, 81668), (272, 78065), (340, 62452), (442, 48040), (520, 40834), (680, 31226), (884, 24020), (1040, 20417), (1105, 19216), (1201, 17680), (1360, 15613), (1768, 12010), (2210, 9608), (2402, 8840), (3536, 6005), (4420, 4804)]