81661980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{8669}}^1$

素因数の和:8838

約数の個数: 48

約数和(自身を含む): 230136480

約数和(自身を除く): 148474500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 2355, 3140, 4710, 8669, 9420, 17338, 26007, 34676, 43345, 52014, 86690, 104028, 130035, 173380, 260070, 520140, 1361033, 2722066, 4083099, 5444132, 6805165, 8166198, 13610330, 16332396, 20415495, 27220660, 40830990, 81661980]

約数ペア:

[(1, 81661980), (2, 40830990), (3, 27220660), (4, 20415495), (5, 16332396), (6, 13610330), (10, 8166198), (12, 6805165), (15, 5444132), (20, 4083099), (30, 2722066), (60, 1361033), (157, 520140), (314, 260070), (471, 173380), (628, 130035), (785, 104028), (942, 86690), (1570, 52014), (1884, 43345), (2355, 34676), (3140, 26007), (4710, 17338), (8669, 9420)]