20138251640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{578021}}^1$

素因数の和:578112

約数の個数: 64

約数和(自身を含む): 49524924960

約数和(自身を除く): 29386673320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 536, 670, 871, 1340, 1742, 2680, 3484, 4355, 6968, 8710, 17420, 34840, 578021, 1156042, 2312084, 2890105, 4624168, 5780210, 7514273, 11560420, 15028546, 23120840, 30057092, 37571365, 38727407, 60114184, 75142730, 77454814, 150285460, 154909628, 193637035, 300570920, 309819256, 387274070, 503456291, 774548140, 1006912582, 1549096280, 2013825164, 2517281455, 4027650328, 5034562910, 10069125820, 20138251640]

約数ペア:

[(1, 20138251640), (2, 10069125820), (4, 5034562910), (5, 4027650328), (8, 2517281455), (10, 2013825164), (13, 1549096280), (20, 1006912582), (26, 774548140), (40, 503456291), (52, 387274070), (65, 309819256), (67, 300570920), (104, 193637035), (130, 154909628), (134, 150285460), (260, 77454814), (268, 75142730), (335, 60114184), (520, 38727407), (536, 37571365), (670, 30057092), (871, 23120840), (1340, 15028546), (1742, 11560420), (2680, 7514273), (3484, 5780210), (4355, 4624168), (6968, 2890105), (8710, 2312084), (17420, 1156042), (34840, 578021)]