80656420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10007}}^1$

素因数の和:10060

約数の個数: 48

約数和(自身を含む): 188310528

約数和(自身を除く): 107654108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 10007, 20014, 40028, 50035, 100070, 130091, 200140, 260182, 310217, 520364, 620434, 650455, 1240868, 1300910, 1551085, 2601820, 3102170, 4032821, 6204340, 8065642, 16131284, 20164105, 40328210, 80656420]

約数ペア:

[(1, 80656420), (2, 40328210), (4, 20164105), (5, 16131284), (10, 8065642), (13, 6204340), (20, 4032821), (26, 3102170), (31, 2601820), (52, 1551085), (62, 1300910), (65, 1240868), (124, 650455), (130, 620434), (155, 520364), (260, 310217), (310, 260182), (403, 200140), (620, 130091), (806, 100070), (1612, 50035), (2015, 40028), (4030, 20014), (8060, 10007)]