21378656

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3023}}^1$

素因数の和:3063

約数の個数: 48

約数和(自身を含む): 48009024

約数和(自身を除く): 26630368

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 208, 221, 272, 416, 442, 544, 884, 1768, 3023, 3536, 6046, 7072, 12092, 24184, 39299, 48368, 51391, 78598, 96736, 102782, 157196, 205564, 314392, 411128, 628784, 668083, 822256, 1257568, 1336166, 1644512, 2672332, 5344664, 10689328, 21378656]

約数ペア:

[(1, 21378656), (2, 10689328), (4, 5344664), (8, 2672332), (13, 1644512), (16, 1336166), (17, 1257568), (26, 822256), (32, 668083), (34, 628784), (52, 411128), (68, 314392), (104, 205564), (136, 157196), (208, 102782), (221, 96736), (272, 78598), (416, 51391), (442, 48368), (544, 39299), (884, 24184), (1768, 12092), (3023, 7072), (3536, 6046)]