81941240

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70639}}^1$

素因数の和:70679

約数の個数: 32

約数和(自身を含む): 190728000

約数和(自身を除く): 108786760

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 70639, 141278, 282556, 353195, 565112, 706390, 1412780, 2048531, 2825560, 4097062, 8194124, 10242655, 16388248, 20485310, 40970620, 81941240]

約数ペア:

[(1, 81941240), (2, 40970620), (4, 20485310), (5, 16388248), (8, 10242655), (10, 8194124), (20, 4097062), (29, 2825560), (40, 2048531), (58, 1412780), (116, 706390), (145, 565112), (232, 353195), (290, 282556), (580, 141278), (1160, 70639)]