256419940

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{37379}}^1$

素因数の和:37409

約数の個数: 48

約数和(自身を含む): 627984000

約数和(自身を除く): 371564060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 37379, 74758, 149516, 186895, 261653, 373790, 523306, 747580, 1046612, 1308265, 1831571, 2616530, 3663142, 5233060, 7326284, 9157855, 12820997, 18315710, 25641994, 36631420, 51283988, 64104985, 128209970, 256419940]

約数ペア:

[(1, 256419940), (2, 128209970), (4, 64104985), (5, 51283988), (7, 36631420), (10, 25641994), (14, 18315710), (20, 12820997), (28, 9157855), (35, 7326284), (49, 5233060), (70, 3663142), (98, 2616530), (140, 1831571), (196, 1308265), (245, 1046612), (343, 747580), (490, 523306), (686, 373790), (980, 261653), (1372, 186895), (1715, 149516), (3430, 74758), (6860, 37379)]