29981980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{647}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 72285696

約数和(自身を除く): 42303716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 331, 647, 662, 1294, 1324, 1655, 2317, 2588, 3235, 3310, 4529, 4634, 6470, 6620, 9058, 9268, 11585, 12940, 18116, 22645, 23170, 45290, 46340, 90580, 214157, 428314, 856628, 1070785, 1499099, 2141570, 2998198, 4283140, 5996396, 7495495, 14990990, 29981980]

約数ペア:

[(1, 29981980), (2, 14990990), (4, 7495495), (5, 5996396), (7, 4283140), (10, 2998198), (14, 2141570), (20, 1499099), (28, 1070785), (35, 856628), (70, 428314), (140, 214157), (331, 90580), (647, 46340), (662, 45290), (1294, 23170), (1324, 22645), (1655, 18116), (2317, 12940), (2588, 11585), (3235, 9268), (3310, 9058), (4529, 6620), (4634, 6470)]