17862890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 33022080

約数和(自身を除く): 15159190

約数列:

[1, 2, 5, 10, 71, 139, 142, 181, 278, 355, 362, 695, 710, 905, 1390, 1810, 9869, 12851, 19738, 25159, 25702, 49345, 50318, 64255, 98690, 125795, 128510, 251590, 1786289, 3572578, 8931445, 17862890]

約数ペア:

[(1, 17862890), (2, 8931445), (5, 3572578), (10, 1786289), (71, 251590), (139, 128510), (142, 125795), (181, 98690), (278, 64255), (355, 50318), (362, 49345), (695, 25702), (710, 25159), (905, 19738), (1390, 12851), (1810, 9869)]