15801580

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 34312320

約数和(自身を除く): 18510740

約数列:

[1, 2, 4, 5, 10, 20, 73, 79, 137, 146, 158, 274, 292, 316, 365, 395, 548, 685, 730, 790, 1370, 1460, 1580, 2740, 5767, 10001, 10823, 11534, 20002, 21646, 23068, 28835, 40004, 43292, 50005, 54115, 57670, 100010, 108230, 115340, 200020, 216460, 790079, 1580158, 3160316, 3950395, 7900790, 15801580]

約数ペア:

[(1, 15801580), (2, 7900790), (4, 3950395), (5, 3160316), (10, 1580158), (20, 790079), (73, 216460), (79, 200020), (137, 115340), (146, 108230), (158, 100010), (274, 57670), (292, 54115), (316, 50005), (365, 43292), (395, 40004), (548, 28835), (685, 23068), (730, 21646), (790, 20002), (1370, 11534), (1460, 10823), (1580, 10001), (2740, 5767)]