401236420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{118709}}^1$

素因数の和:118744

約数の個数: 36

約数和(自身を含む): 912405060

約数和(自身を除く): 511168640

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 118709, 237418, 474836, 593545, 1187090, 1543217, 2374180, 3086434, 6172868, 7716085, 15432170, 20061821, 30864340, 40123642, 80247284, 100309105, 200618210, 401236420]

約数ペア:

[(1, 401236420), (2, 200618210), (4, 100309105), (5, 80247284), (10, 40123642), (13, 30864340), (20, 20061821), (26, 15432170), (52, 7716085), (65, 6172868), (130, 3086434), (169, 2374180), (260, 1543217), (338, 1187090), (676, 593545), (845, 474836), (1690, 237418), (3380, 118709)]