20787450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{997}}^1$

素因数の和:1151

約数の個数: 48

約数和(自身を含む): 51975840

約数和(自身を除く): 31188390

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 139, 150, 278, 417, 695, 834, 997, 1390, 1994, 2085, 2991, 3475, 4170, 4985, 5982, 6950, 9970, 10425, 14955, 20850, 24925, 29910, 49850, 74775, 138583, 149550, 277166, 415749, 692915, 831498, 1385830, 2078745, 3464575, 4157490, 6929150, 10393725, 20787450]

約数ペア:

[(1, 20787450), (2, 10393725), (3, 6929150), (5, 4157490), (6, 3464575), (10, 2078745), (15, 1385830), (25, 831498), (30, 692915), (50, 415749), (75, 277166), (139, 149550), (150, 138583), (278, 74775), (417, 49850), (695, 29910), (834, 24925), (997, 20850), (1390, 14955), (1994, 10425), (2085, 9970), (2991, 6950), (3475, 5982), (4170, 4985)]