20871870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 31382850

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 71, 82, 123, 142, 205, 213, 239, 246, 355, 410, 426, 478, 615, 710, 717, 1065, 1195, 1230, 1434, 2130, 2390, 2911, 3585, 5822, 7170, 8733, 9799, 14555, 16969, 17466, 19598, 29110, 29397, 33938, 43665, 48995, 50907, 58794, 84845, 87330, 97990, 101814, 146985, 169690, 254535, 293970, 509070, 695729, 1391458, 2087187, 3478645, 4174374, 6957290, 10435935, 20871870]

約数ペア:

[(1, 20871870), (2, 10435935), (3, 6957290), (5, 4174374), (6, 3478645), (10, 2087187), (15, 1391458), (30, 695729), (41, 509070), (71, 293970), (82, 254535), (123, 169690), (142, 146985), (205, 101814), (213, 97990), (239, 87330), (246, 84845), (355, 58794), (410, 50907), (426, 48995), (478, 43665), (615, 33938), (710, 29397), (717, 29110), (1065, 19598), (1195, 17466), (1230, 16969), (1434, 14555), (2130, 9799), (2390, 8733), (2911, 7170), (3585, 5822)]