20521150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:397

約数の個数: 48

約数和(自身を含む): 41591088

約数和(自身を除く): 21069938

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 131, 241, 262, 325, 482, 650, 655, 1205, 1310, 1703, 2410, 3133, 3275, 3406, 6025, 6266, 6550, 8515, 12050, 15665, 17030, 31330, 31571, 42575, 63142, 78325, 85150, 156650, 157855, 315710, 410423, 789275, 820846, 1578550, 2052115, 4104230, 10260575, 20521150]

約数ペア:

[(1, 20521150), (2, 10260575), (5, 4104230), (10, 2052115), (13, 1578550), (25, 820846), (26, 789275), (50, 410423), (65, 315710), (130, 157855), (131, 156650), (241, 85150), (262, 78325), (325, 63142), (482, 42575), (650, 31571), (655, 31330), (1205, 17030), (1310, 15665), (1703, 12050), (2410, 8515), (3133, 6550), (3275, 6266), (3406, 6025)]