7780240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7481}}^1$

素因数の和:7507

約数の個数: 40

約数和(自身を含む): 19483128

約数和(自身を除く): 11702888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 7481, 14962, 29924, 37405, 59848, 74810, 97253, 119696, 149620, 194506, 299240, 389012, 486265, 598480, 778024, 972530, 1556048, 1945060, 3890120, 7780240]

約数ペア:

[(1, 7780240), (2, 3890120), (4, 1945060), (5, 1556048), (8, 972530), (10, 778024), (13, 598480), (16, 486265), (20, 389012), (26, 299240), (40, 194506), (52, 149620), (65, 119696), (80, 97253), (104, 74810), (130, 59848), (208, 37405), (260, 29924), (520, 14962), (1040, 7481)]