20804260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1423}}^1$

素因数の和:1492

約数の個数: 48

約数和(自身を含む): 47367936

約数和(自身を除く): 26563676

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1423, 1462, 2846, 2924, 3655, 5692, 7115, 7310, 14230, 14620, 24191, 28460, 48382, 61189, 96764, 120955, 122378, 241910, 244756, 305945, 483820, 611890, 1040213, 1223780, 2080426, 4160852, 5201065, 10402130, 20804260]

約数ペア:

[(1, 20804260), (2, 10402130), (4, 5201065), (5, 4160852), (10, 2080426), (17, 1223780), (20, 1040213), (34, 611890), (43, 483820), (68, 305945), (85, 244756), (86, 241910), (170, 122378), (172, 120955), (215, 96764), (340, 61189), (430, 48382), (731, 28460), (860, 24191), (1423, 14620), (1462, 14230), (2846, 7310), (2924, 7115), (3655, 5692)]