7239440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6961}}^1$

素因数の和:6987

約数の個数: 40

約数和(自身を含む): 18129048

約数和(自身を除く): 10889608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 6961, 13922, 27844, 34805, 55688, 69610, 90493, 111376, 139220, 180986, 278440, 361972, 452465, 556880, 723944, 904930, 1447888, 1809860, 3619720, 7239440]

約数ペア:

[(1, 7239440), (2, 3619720), (4, 1809860), (5, 1447888), (8, 904930), (10, 723944), (13, 556880), (16, 452465), (20, 361972), (26, 278440), (40, 180986), (52, 139220), (65, 111376), (80, 90493), (104, 69610), (130, 55688), (208, 34805), (260, 27844), (520, 13922), (1040, 6961)]