71325380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{997}}^1$

素因数の和:1093

約数の個数: 72

約数和(自身を含む): 176801688

約数和(自身を除く): 105476308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 73, 98, 140, 146, 196, 245, 292, 365, 490, 511, 730, 980, 997, 1022, 1460, 1994, 2044, 2555, 3577, 3988, 4985, 5110, 6979, 7154, 9970, 10220, 13958, 14308, 17885, 19940, 27916, 34895, 35770, 48853, 69790, 71540, 72781, 97706, 139580, 145562, 195412, 244265, 291124, 363905, 488530, 509467, 727810, 977060, 1018934, 1455620, 2037868, 2547335, 3566269, 5094670, 7132538, 10189340, 14265076, 17831345, 35662690, 71325380]

約数ペア:

[(1, 71325380), (2, 35662690), (4, 17831345), (5, 14265076), (7, 10189340), (10, 7132538), (14, 5094670), (20, 3566269), (28, 2547335), (35, 2037868), (49, 1455620), (70, 1018934), (73, 977060), (98, 727810), (140, 509467), (146, 488530), (196, 363905), (245, 291124), (292, 244265), (365, 195412), (490, 145562), (511, 139580), (730, 97706), (980, 72781), (997, 71540), (1022, 69790), (1460, 48853), (1994, 35770), (2044, 34895), (2555, 27916), (3577, 19940), (3988, 17885), (4985, 14308), (5110, 13958), (6979, 10220), (7154, 9970)]