201766520

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{12967}}^1$

素因数の和:13367

約数の個数: 32

約数和(自身を含む): 455176800

約数和(自身を除く): 253410280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 12967, 15560, 25934, 51868, 64835, 103736, 129670, 259340, 518680, 5044163, 10088326, 20176652, 25220815, 40353304, 50441630, 100883260, 201766520]

約数ペア:

[(1, 201766520), (2, 100883260), (4, 50441630), (5, 40353304), (8, 25220815), (10, 20176652), (20, 10088326), (40, 5044163), (389, 518680), (778, 259340), (1556, 129670), (1945, 103736), (3112, 64835), (3890, 51868), (7780, 25934), (12967, 15560)]