18805840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7583}}^1$

素因数の和:7627

約数の個数: 40

約数和(自身を含む): 45139968

約数和(自身を除く): 26334128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7583, 15166, 30332, 37915, 60664, 75830, 121328, 151660, 235073, 303320, 470146, 606640, 940292, 1175365, 1880584, 2350730, 3761168, 4701460, 9402920, 18805840]

約数ペア:

[(1, 18805840), (2, 9402920), (4, 4701460), (5, 3761168), (8, 2350730), (10, 1880584), (16, 1175365), (20, 940292), (31, 606640), (40, 470146), (62, 303320), (80, 235073), (124, 151660), (155, 121328), (248, 75830), (310, 60664), (496, 37915), (620, 30332), (1240, 15166), (2480, 7583)]