21999848

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1063}}^1$

素因数の和:1281

約数の個数: 32

約数和(自身を含む): 44688000

約数和(自身を除く): 22688152

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 796, 1063, 1592, 2126, 2587, 4252, 5174, 8504, 10348, 13819, 20696, 27638, 55276, 110552, 211537, 423074, 846148, 1692296, 2749981, 5499962, 10999924, 21999848]

約数ペア:

[(1, 21999848), (2, 10999924), (4, 5499962), (8, 2749981), (13, 1692296), (26, 846148), (52, 423074), (104, 211537), (199, 110552), (398, 55276), (796, 27638), (1063, 20696), (1592, 13819), (2126, 10348), (2587, 8504), (4252, 5174)]