28100320

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10331}}^1$

素因数の和:10363

約数の個数: 48

約数和(自身を含む): 70298928

約数和(自身を除く): 42198608

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 10331, 20662, 41324, 51655, 82648, 103310, 165296, 175627, 206620, 330592, 351254, 413240, 702508, 826480, 878135, 1405016, 1652960, 1756270, 2810032, 3512540, 5620064, 7025080, 14050160, 28100320]

約数ペア:

[(1, 28100320), (2, 14050160), (4, 7025080), (5, 5620064), (8, 3512540), (10, 2810032), (16, 1756270), (17, 1652960), (20, 1405016), (32, 878135), (34, 826480), (40, 702508), (68, 413240), (80, 351254), (85, 330592), (136, 206620), (160, 175627), (170, 165296), (272, 103310), (340, 82648), (544, 51655), (680, 41324), (1360, 20662), (2720, 10331)]