20925640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30773}}^1$

素因数の和:30801

約数の個数: 32

約数和(自身を含む): 49853880

約数和(自身を除く): 28928240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30773, 61546, 123092, 153865, 246184, 307730, 523141, 615460, 1046282, 1230920, 2092564, 2615705, 4185128, 5231410, 10462820, 20925640]

約数ペア:

[(1, 20925640), (2, 10462820), (4, 5231410), (5, 4185128), (8, 2615705), (10, 2092564), (17, 1230920), (20, 1046282), (34, 615460), (40, 523141), (68, 307730), (85, 246184), (136, 153865), (170, 123092), (340, 61546), (680, 30773)]