25779280

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4079}}^1$

素因数の和:4171

約数の個数: 40

約数和(自身を含む): 60710400

約数和(自身を除く): 34931120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 4079, 6320, 8158, 16316, 20395, 32632, 40790, 65264, 81580, 163160, 322241, 326320, 644482, 1288964, 1611205, 2577928, 3222410, 5155856, 6444820, 12889640, 25779280]

約数ペア:

[(1, 25779280), (2, 12889640), (4, 6444820), (5, 5155856), (8, 3222410), (10, 2577928), (16, 1611205), (20, 1288964), (40, 644482), (79, 326320), (80, 322241), (158, 163160), (316, 81580), (395, 65264), (632, 40790), (790, 32632), (1264, 20395), (1580, 16316), (3160, 8158), (4079, 6320)]