19457680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22111}}^1$

素因数の和:22135

約数の個数: 40

約数和(自身を含む): 49353984

約数和(自身を除く): 29896304

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22111, 44222, 88444, 110555, 176888, 221110, 243221, 353776, 442220, 486442, 884440, 972884, 1216105, 1768880, 1945768, 2432210, 3891536, 4864420, 9728840, 19457680]

約数ペア:

[(1, 19457680), (2, 9728840), (4, 4864420), (5, 3891536), (8, 2432210), (10, 1945768), (11, 1768880), (16, 1216105), (20, 972884), (22, 884440), (40, 486442), (44, 442220), (55, 353776), (80, 243221), (88, 221110), (110, 176888), (176, 110555), (220, 88444), (440, 44222), (880, 22111)]