291219220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{3491}}^1$

素因数の和:3640

約数の個数: 48

約数和(自身を含む): 632415168

約数和(自身を除く): 341195948

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 172, 194, 215, 388, 430, 485, 860, 970, 1940, 3491, 4171, 6982, 8342, 13964, 16684, 17455, 20855, 34910, 41710, 69820, 83420, 150113, 300226, 338627, 600452, 677254, 750565, 1354508, 1501130, 1693135, 3002260, 3386270, 6772540, 14560961, 29121922, 58243844, 72804805, 145609610, 291219220]

約数ペア:

[(1, 291219220), (2, 145609610), (4, 72804805), (5, 58243844), (10, 29121922), (20, 14560961), (43, 6772540), (86, 3386270), (97, 3002260), (172, 1693135), (194, 1501130), (215, 1354508), (388, 750565), (430, 677254), (485, 600452), (860, 338627), (970, 300226), (1940, 150113), (3491, 83420), (4171, 69820), (6982, 41710), (8342, 34910), (13964, 20855), (16684, 17455)]