9979280

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1579}}^1$

素因数の和:1671

約数の個数: 40

約数和(自身を含む): 23510400

約数和(自身を除く): 13531120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1579, 1580, 3158, 3160, 6316, 6320, 7895, 12632, 15790, 25264, 31580, 63160, 124741, 126320, 249482, 498964, 623705, 997928, 1247410, 1995856, 2494820, 4989640, 9979280]

約数ペア:

[(1, 9979280), (2, 4989640), (4, 2494820), (5, 1995856), (8, 1247410), (10, 997928), (16, 623705), (20, 498964), (40, 249482), (79, 126320), (80, 124741), (158, 63160), (316, 31580), (395, 25264), (632, 15790), (790, 12632), (1264, 7895), (1579, 6320), (1580, 6316), (3158, 3160)]