28556560

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{727}}^1$

素因数の和:1231

約数の個数: 40

約数和(自身を含む): 66620736

約数和(自身を除く): 38064176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 727, 982, 1454, 1964, 2455, 2908, 3635, 3928, 4910, 5816, 7270, 7856, 9820, 11632, 14540, 19640, 29080, 39280, 58160, 356957, 713914, 1427828, 1784785, 2855656, 3569570, 5711312, 7139140, 14278280, 28556560]

約数ペア:

[(1, 28556560), (2, 14278280), (4, 7139140), (5, 5711312), (8, 3569570), (10, 2855656), (16, 1784785), (20, 1427828), (40, 713914), (80, 356957), (491, 58160), (727, 39280), (982, 29080), (1454, 19640), (1964, 14540), (2455, 11632), (2908, 9820), (3635, 7856), (3928, 7270), (4910, 5816)]