18081920

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1487}}^1$

素因数の和:1525

約数の個数: 64

約数和(自身を含む): 45532800

約数和(自身を除く): 27450880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1487, 1520, 2432, 2974, 3040, 5948, 6080, 7435, 11896, 12160, 14870, 23792, 28253, 29740, 47584, 56506, 59480, 95168, 113012, 118960, 141265, 190336, 226024, 237920, 282530, 452048, 475840, 565060, 904096, 951680, 1130120, 1808192, 2260240, 3616384, 4520480, 9040960, 18081920]

約数ペア:

[(1, 18081920), (2, 9040960), (4, 4520480), (5, 3616384), (8, 2260240), (10, 1808192), (16, 1130120), (19, 951680), (20, 904096), (32, 565060), (38, 475840), (40, 452048), (64, 282530), (76, 237920), (80, 226024), (95, 190336), (128, 141265), (152, 118960), (160, 113012), (190, 95168), (304, 59480), (320, 56506), (380, 47584), (608, 29740), (640, 28253), (760, 23792), (1216, 14870), (1487, 12160), (1520, 11896), (2432, 7435), (2974, 6080), (3040, 5948)]