25144120

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 58608000

約数和(自身を除く): 33463880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 79, 109, 146, 158, 218, 292, 316, 365, 395, 436, 545, 584, 632, 730, 790, 872, 1090, 1460, 1580, 2180, 2920, 3160, 4360, 5767, 7957, 8611, 11534, 15914, 17222, 23068, 28835, 31828, 34444, 39785, 43055, 46136, 57670, 63656, 68888, 79570, 86110, 115340, 159140, 172220, 230680, 318280, 344440, 628603, 1257206, 2514412, 3143015, 5028824, 6286030, 12572060, 25144120]

約数ペア:

[(1, 25144120), (2, 12572060), (4, 6286030), (5, 5028824), (8, 3143015), (10, 2514412), (20, 1257206), (40, 628603), (73, 344440), (79, 318280), (109, 230680), (146, 172220), (158, 159140), (218, 115340), (292, 86110), (316, 79570), (365, 68888), (395, 63656), (436, 57670), (545, 46136), (584, 43055), (632, 39785), (730, 34444), (790, 31828), (872, 28835), (1090, 23068), (1460, 17222), (1580, 15914), (2180, 11534), (2920, 8611), (3160, 7957), (4360, 5767)]