21883760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{16091}}^1$

素因数の和:16121

約数の個数: 40

約数和(自身を含む): 53876016

約数和(自身を除く): 31992256

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 16091, 32182, 64364, 80455, 128728, 160910, 257456, 273547, 321820, 547094, 643640, 1094188, 1287280, 1367735, 2188376, 2735470, 4376752, 5470940, 10941880, 21883760]

約数ペア:

[(1, 21883760), (2, 10941880), (4, 5470940), (5, 4376752), (8, 2735470), (10, 2188376), (16, 1367735), (17, 1287280), (20, 1094188), (34, 643640), (40, 547094), (68, 321820), (80, 273547), (85, 257456), (136, 160910), (170, 128728), (272, 80455), (340, 64364), (680, 32182), (1360, 16091)]