818449840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{786971}}^1$

素因数の和:786997

約数の個数: 40

約数和(自身を含む): 2049275088

約数和(自身を除く): 1230825248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 786971, 1573942, 3147884, 3934855, 6295768, 7869710, 10230623, 12591536, 15739420, 20461246, 31478840, 40922492, 51153115, 62957680, 81844984, 102306230, 163689968, 204612460, 409224920, 818449840]

約数ペア:

[(1, 818449840), (2, 409224920), (4, 204612460), (5, 163689968), (8, 102306230), (10, 81844984), (13, 62957680), (16, 51153115), (20, 40922492), (26, 31478840), (40, 20461246), (52, 15739420), (65, 12591536), (80, 10230623), (104, 7869710), (130, 6295768), (208, 3934855), (260, 3147884), (520, 1573942), (1040, 786971)]