259799820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{618571}}^1$

素因数の和:618590

約数の個数: 48

約数和(自身を含む): 831360768

約数和(自身を除く): 571560948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 618571, 1237142, 1855713, 2474284, 3092855, 3711426, 4329997, 6185710, 7422852, 8659994, 9278565, 12371420, 12989991, 17319988, 18557130, 21649985, 25979982, 37114260, 43299970, 51959964, 64949955, 86599940, 129899910, 259799820]

約数ペア:

[(1, 259799820), (2, 129899910), (3, 86599940), (4, 64949955), (5, 51959964), (6, 43299970), (7, 37114260), (10, 25979982), (12, 21649985), (14, 18557130), (15, 17319988), (20, 12989991), (21, 12371420), (28, 9278565), (30, 8659994), (35, 7422852), (42, 6185710), (60, 4329997), (70, 3711426), (84, 3092855), (105, 2474284), (140, 1855713), (210, 1237142), (420, 618571)]