388754020

素因数分解:

$2^2\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{15439}}^1$

素因数の和:16707

約数の個数: 24

約数和(自身を含む): 817084800

約数和(自身を除く): 428330780

約数列:

[1, 2, 4, 5, 10, 20, 1259, 2518, 5036, 6295, 12590, 15439, 25180, 30878, 61756, 77195, 154390, 308780, 19437701, 38875402, 77750804, 97188505, 194377010, 388754020]

約数ペア:

[(1, 388754020), (2, 194377010), (4, 97188505), (5, 77750804), (10, 38875402), (20, 19437701), (1259, 308780), (2518, 154390), (5036, 77195), (6295, 61756), (12590, 30878), (15439, 25180)]