18922640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21503}}^1$

素因数の和:21527

約数の個数: 40

約数和(自身を含む): 47996928

約数和(自身を除く): 29074288

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21503, 43006, 86012, 107515, 172024, 215030, 236533, 344048, 430060, 473066, 860120, 946132, 1182665, 1720240, 1892264, 2365330, 3784528, 4730660, 9461320, 18922640]

約数ペア:

[(1, 18922640), (2, 9461320), (4, 4730660), (5, 3784528), (8, 2365330), (10, 1892264), (11, 1720240), (16, 1182665), (20, 946132), (22, 860120), (40, 473066), (44, 430060), (55, 344048), (80, 236533), (88, 215030), (110, 172024), (176, 107515), (220, 86012), (440, 43006), (880, 21503)]