20258420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11131}}^1$

素因数の和:11160

約数の個数: 48

約数和(自身を含む): 52364928

約数和(自身を除く): 32106508

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11131, 22262, 44524, 55655, 77917, 111310, 144703, 155834, 222620, 289406, 311668, 389585, 578812, 723515, 779170, 1012921, 1447030, 1558340, 2025842, 2894060, 4051684, 5064605, 10129210, 20258420]

約数ペア:

[(1, 20258420), (2, 10129210), (4, 5064605), (5, 4051684), (7, 2894060), (10, 2025842), (13, 1558340), (14, 1447030), (20, 1012921), (26, 779170), (28, 723515), (35, 578812), (52, 389585), (65, 311668), (70, 289406), (91, 222620), (130, 155834), (140, 144703), (182, 111310), (260, 77917), (364, 55655), (455, 44524), (910, 22262), (1820, 11131)]