71388980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{21121}}^1$

素因数の和:21156

約数の個数: 36

約数和(自身を含む): 162343692

約数和(自身を除く): 90954712

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 21121, 42242, 84484, 105605, 211210, 274573, 422420, 549146, 1098292, 1372865, 2745730, 3569449, 5491460, 7138898, 14277796, 17847245, 35694490, 71388980]

約数ペア:

[(1, 71388980), (2, 35694490), (4, 17847245), (5, 14277796), (10, 7138898), (13, 5491460), (20, 3569449), (26, 2745730), (52, 1372865), (65, 1098292), (130, 549146), (169, 422420), (260, 274573), (338, 211210), (676, 105605), (845, 84484), (1690, 42242), (3380, 21121)]