18678928

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{421}}^1$

素因数の和:535

約数の個数: 40

約数和(自身を含む): 37676160

約数和(自身を除く): 18997232

約数列:

[1, 2, 4, 8, 16, 47, 59, 94, 118, 188, 236, 376, 421, 472, 752, 842, 944, 1684, 2773, 3368, 5546, 6736, 11092, 19787, 22184, 24839, 39574, 44368, 49678, 79148, 99356, 158296, 198712, 316592, 397424, 1167433, 2334866, 4669732, 9339464, 18678928]

約数ペア:

[(1, 18678928), (2, 9339464), (4, 4669732), (8, 2334866), (16, 1167433), (47, 397424), (59, 316592), (94, 198712), (118, 158296), (188, 99356), (236, 79148), (376, 49678), (421, 44368), (472, 39574), (752, 24839), (842, 22184), (944, 19787), (1684, 11092), (2773, 6736), (3368, 5546)]