80640980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{4397}}^1$

素因数の和:4544

約数の個数: 48

約数和(自身を含む): 195060096

約数和(自身を除く): 114419116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1310, 1834, 2620, 3668, 4397, 4585, 8794, 9170, 17588, 18340, 21985, 30779, 43970, 61558, 87940, 123116, 153895, 307790, 576007, 615580, 1152014, 2304028, 2880035, 4032049, 5760070, 8064098, 11520140, 16128196, 20160245, 40320490, 80640980]

約数ペア:

[(1, 80640980), (2, 40320490), (4, 20160245), (5, 16128196), (7, 11520140), (10, 8064098), (14, 5760070), (20, 4032049), (28, 2880035), (35, 2304028), (70, 1152014), (131, 615580), (140, 576007), (262, 307790), (524, 153895), (655, 123116), (917, 87940), (1310, 61558), (1834, 43970), (2620, 30779), (3668, 21985), (4397, 18340), (4585, 17588), (8794, 9170)]