20271290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 42940800

約数和(自身を除く): 22669510

約数列:

[1, 2, 5, 10, 13, 19, 26, 29, 38, 58, 65, 95, 130, 145, 190, 247, 283, 290, 377, 494, 551, 566, 754, 1102, 1235, 1415, 1885, 2470, 2755, 2830, 3679, 3770, 5377, 5510, 7163, 7358, 8207, 10754, 14326, 16414, 18395, 26885, 35815, 36790, 41035, 53770, 69901, 71630, 82070, 106691, 139802, 155933, 213382, 311866, 349505, 533455, 699010, 779665, 1066910, 1559330, 2027129, 4054258, 10135645, 20271290]

約数ペア:

[(1, 20271290), (2, 10135645), (5, 4054258), (10, 2027129), (13, 1559330), (19, 1066910), (26, 779665), (29, 699010), (38, 533455), (58, 349505), (65, 311866), (95, 213382), (130, 155933), (145, 139802), (190, 106691), (247, 82070), (283, 71630), (290, 69901), (377, 53770), (494, 41035), (551, 36790), (566, 35815), (754, 26885), (1102, 18395), (1235, 16414), (1415, 14326), (1885, 10754), (2470, 8207), (2755, 7358), (2830, 7163), (3679, 5510), (3770, 5377)]