21081190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9539}}^1$

素因数の和:9576

約数の個数: 32

約数和(自身を含む): 43273440

約数和(自身を除く): 22192250

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9539, 19078, 47695, 95390, 124007, 162163, 248014, 324326, 620035, 810815, 1240070, 1621630, 2108119, 4216238, 10540595, 21081190]

約数ペア:

[(1, 21081190), (2, 10540595), (5, 4216238), (10, 2108119), (13, 1621630), (17, 1240070), (26, 810815), (34, 620035), (65, 324326), (85, 248014), (130, 162163), (170, 124007), (221, 95390), (442, 47695), (1105, 19078), (2210, 9539)]