20508150

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{809}}^1$

素因数の和:850

約数の個数: 72

約数和(自身を含む): 55141560

約数和(自身を除く): 34633410

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 169, 195, 325, 338, 390, 507, 650, 809, 845, 975, 1014, 1618, 1690, 1950, 2427, 2535, 4045, 4225, 4854, 5070, 8090, 8450, 10517, 12135, 12675, 20225, 21034, 24270, 25350, 31551, 40450, 52585, 60675, 63102, 105170, 121350, 136721, 157755, 262925, 273442, 315510, 410163, 525850, 683605, 788775, 820326, 1367210, 1577550, 2050815, 3418025, 4101630, 6836050, 10254075, 20508150]

約数ペア:

[(1, 20508150), (2, 10254075), (3, 6836050), (5, 4101630), (6, 3418025), (10, 2050815), (13, 1577550), (15, 1367210), (25, 820326), (26, 788775), (30, 683605), (39, 525850), (50, 410163), (65, 315510), (75, 273442), (78, 262925), (130, 157755), (150, 136721), (169, 121350), (195, 105170), (325, 63102), (338, 60675), (390, 52585), (507, 40450), (650, 31551), (809, 25350), (845, 24270), (975, 21034), (1014, 20225), (1618, 12675), (1690, 12135), (1950, 10517), (2427, 8450), (2535, 8090), (4045, 5070), (4225, 4854)]