21806920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32069}}^1$

素因数の和:32097

約数の個数: 32

約数和(自身を含む): 51953400

約数和(自身を除く): 30146480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32069, 64138, 128276, 160345, 256552, 320690, 545173, 641380, 1090346, 1282760, 2180692, 2725865, 4361384, 5451730, 10903460, 21806920]

約数ペア:

[(1, 21806920), (2, 10903460), (4, 5451730), (5, 4361384), (8, 2725865), (10, 2180692), (17, 1282760), (20, 1090346), (34, 641380), (40, 545173), (68, 320690), (85, 256552), (136, 160345), (170, 128276), (340, 64138), (680, 32069)]