21615770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 44914176

約数和(自身を除く): 23298406

約数列:

[1, 2, 5, 10, 11, 22, 37, 47, 55, 74, 94, 110, 113, 185, 226, 235, 370, 407, 470, 517, 565, 814, 1034, 1130, 1243, 1739, 2035, 2486, 2585, 3478, 4070, 4181, 5170, 5311, 6215, 8362, 8695, 10622, 12430, 17390, 19129, 20905, 26555, 38258, 41810, 45991, 53110, 58421, 91982, 95645, 116842, 191290, 196507, 229955, 292105, 393014, 459910, 584210, 982535, 1965070, 2161577, 4323154, 10807885, 21615770]

約数ペア:

[(1, 21615770), (2, 10807885), (5, 4323154), (10, 2161577), (11, 1965070), (22, 982535), (37, 584210), (47, 459910), (55, 393014), (74, 292105), (94, 229955), (110, 196507), (113, 191290), (185, 116842), (226, 95645), (235, 91982), (370, 58421), (407, 53110), (470, 45991), (517, 41810), (565, 38258), (814, 26555), (1034, 20905), (1130, 19129), (1243, 17390), (1739, 12430), (2035, 10622), (2486, 8695), (2585, 8362), (3478, 6215), (4070, 5311), (4181, 5170)]