20156240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19381}}^1$

素因数の和:19407

約数の個数: 40

約数和(自身を含む): 50470728

約数和(自身を除く): 30314488

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19381, 38762, 77524, 96905, 155048, 193810, 251953, 310096, 387620, 503906, 775240, 1007812, 1259765, 1550480, 2015624, 2519530, 4031248, 5039060, 10078120, 20156240]

約数ペア:

[(1, 20156240), (2, 10078120), (4, 5039060), (5, 4031248), (8, 2519530), (10, 2015624), (13, 1550480), (16, 1259765), (20, 1007812), (26, 775240), (40, 503906), (52, 387620), (65, 310096), (80, 251953), (104, 193810), (130, 155048), (208, 96905), (260, 77524), (520, 38762), (1040, 19381)]