19803880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13381}}^1$

素因数の和:13429

約数の個数: 32

約数和(自身を含む): 45766440

約数和(自身を除く): 25962560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13381, 26762, 53524, 66905, 107048, 133810, 267620, 495097, 535240, 990194, 1980388, 2475485, 3960776, 4950970, 9901940, 19803880]

約数ペア:

[(1, 19803880), (2, 9901940), (4, 4950970), (5, 3960776), (8, 2475485), (10, 1980388), (20, 990194), (37, 535240), (40, 495097), (74, 267620), (148, 133810), (185, 107048), (296, 66905), (370, 53524), (740, 26762), (1480, 13381)]