21816440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32083}}^1$

素因数の和:32111

約数の個数: 32

約数和(自身を含む): 51976080

約数和(自身を除く): 30159640

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32083, 64166, 128332, 160415, 256664, 320830, 545411, 641660, 1090822, 1283320, 2181644, 2727055, 4363288, 5454110, 10908220, 21816440]

約数ペア:

[(1, 21816440), (2, 10908220), (4, 5454110), (5, 4363288), (8, 2727055), (10, 2181644), (17, 1283320), (20, 1090822), (34, 641660), (40, 545411), (68, 320830), (85, 256664), (136, 160415), (170, 128332), (340, 64166), (680, 32083)]