78648440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151247}}^1$

素因数の和:151271

約数の個数: 32

約数和(自身を含む): 190572480

約数和(自身を除く): 111924040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 151247, 302494, 604988, 756235, 1209976, 1512470, 1966211, 3024940, 3932422, 6049880, 7864844, 9831055, 15729688, 19662110, 39324220, 78648440]

約数ペア:

[(1, 78648440), (2, 39324220), (4, 19662110), (5, 15729688), (8, 9831055), (10, 7864844), (13, 6049880), (20, 3932422), (26, 3024940), (40, 1966211), (52, 1512470), (65, 1209976), (104, 756235), (130, 604988), (260, 302494), (520, 151247)]