64628980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19121}}^1$

素因数の和:19156

約数の個数: 36

約数和(自身を含む): 146971692

約数和(自身を除く): 82342712

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 19121, 38242, 76484, 95605, 191210, 248573, 382420, 497146, 994292, 1242865, 2485730, 3231449, 4971460, 6462898, 12925796, 16157245, 32314490, 64628980]

約数ペア:

[(1, 64628980), (2, 32314490), (4, 16157245), (5, 12925796), (10, 6462898), (13, 4971460), (20, 3231449), (26, 2485730), (52, 1242865), (65, 994292), (130, 497146), (169, 382420), (260, 248573), (338, 191210), (676, 95605), (845, 76484), (1690, 38242), (3380, 19121)]