128601980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{601}}^1\times {\mathrm{823}}^1$

素因数の和:1446

約数の個数: 48

約数和(自身を含む): 291676224

約数和(自身を除く): 163074244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 601, 823, 1202, 1646, 2404, 3005, 3292, 4115, 6010, 7813, 8230, 10699, 12020, 15626, 16460, 21398, 31252, 39065, 42796, 53495, 78130, 106990, 156260, 213980, 494623, 989246, 1978492, 2473115, 4946230, 6430099, 9892460, 12860198, 25720396, 32150495, 64300990, 128601980]

約数ペア:

[(1, 128601980), (2, 64300990), (4, 32150495), (5, 25720396), (10, 12860198), (13, 9892460), (20, 6430099), (26, 4946230), (52, 2473115), (65, 1978492), (130, 989246), (260, 494623), (601, 213980), (823, 156260), (1202, 106990), (1646, 78130), (2404, 53495), (3005, 42796), (3292, 39065), (4115, 31252), (6010, 21398), (7813, 16460), (8230, 15626), (10699, 12020)]