7249840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6971}}^1$

素因数の和:6997

約数の個数: 40

約数和(自身を含む): 18155088

約数和(自身を除く): 10905248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 6971, 13942, 27884, 34855, 55768, 69710, 90623, 111536, 139420, 181246, 278840, 362492, 453115, 557680, 724984, 906230, 1449968, 1812460, 3624920, 7249840]

約数ペア:

[(1, 7249840), (2, 3624920), (4, 1812460), (5, 1449968), (8, 906230), (10, 724984), (13, 557680), (16, 453115), (20, 362492), (26, 278840), (40, 181246), (52, 139420), (65, 111536), (80, 90623), (104, 69710), (130, 55768), (208, 34855), (260, 27884), (520, 13942), (1040, 6971)]