21207160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2399}}^1$

素因数の和:2440

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 33224840

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2399, 4420, 4798, 8840, 9596, 11995, 19192, 23990, 31187, 40783, 47980, 62374, 81566, 95960, 124748, 155935, 163132, 203915, 249496, 311870, 326264, 407830, 530179, 623740, 815660, 1060358, 1247480, 1631320, 2120716, 2650895, 4241432, 5301790, 10603580, 21207160]

約数ペア:

[(1, 21207160), (2, 10603580), (4, 5301790), (5, 4241432), (8, 2650895), (10, 2120716), (13, 1631320), (17, 1247480), (20, 1060358), (26, 815660), (34, 623740), (40, 530179), (52, 407830), (65, 326264), (68, 311870), (85, 249496), (104, 203915), (130, 163132), (136, 155935), (170, 124748), (221, 95960), (260, 81566), (340, 62374), (442, 47980), (520, 40783), (680, 31187), (884, 23990), (1105, 19192), (1768, 11995), (2210, 9596), (2399, 8840), (4420, 4798)]