20270440

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1531}}^1$

素因数の和:1873

約数の個数: 32

約数和(自身を含む): 45776160

約数和(自身を除く): 25505720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1531, 1655, 2648, 3062, 3310, 6124, 6620, 7655, 12248, 13240, 15310, 30620, 61240, 506761, 1013522, 2027044, 2533805, 4054088, 5067610, 10135220, 20270440]

約数ペア:

[(1, 20270440), (2, 10135220), (4, 5067610), (5, 4054088), (8, 2533805), (10, 2027044), (20, 1013522), (40, 506761), (331, 61240), (662, 30620), (1324, 15310), (1531, 13240), (1655, 12248), (2648, 7655), (3062, 6620), (3310, 6124)]