1978160

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{313}}^1$

素因数の和:405

約数の個数: 40

約数和(自身を含む): 4672320

約数和(自身を除く): 2694160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 313, 316, 395, 626, 632, 790, 1252, 1264, 1565, 1580, 2504, 3130, 3160, 5008, 6260, 6320, 12520, 24727, 25040, 49454, 98908, 123635, 197816, 247270, 395632, 494540, 989080, 1978160]

約数ペア:

[(1, 1978160), (2, 989080), (4, 494540), (5, 395632), (8, 247270), (10, 197816), (16, 123635), (20, 98908), (40, 49454), (79, 25040), (80, 24727), (158, 12520), (313, 6320), (316, 6260), (395, 5008), (626, 3160), (632, 3130), (790, 2504), (1252, 1580), (1264, 1565)]