2019912325

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 2843710848

約数和(自身を除く): 823798523

約数列:

[1, 5, 19, 23, 25, 37, 95, 115, 185, 263, 361, 437, 475, 575, 703, 851, 925, 1315, 1805, 2185, 3515, 4255, 4997, 6049, 6575, 8303, 9025, 9731, 10925, 13357, 16169, 17575, 21275, 24985, 30245, 41515, 48655, 66785, 80845, 94943, 114931, 124925, 151225, 184889, 207575, 223813, 243275, 307211, 333925, 404225, 474715, 574655, 924445, 1119065, 1536055, 2183689, 2373575, 2873275, 3512891, 4252447, 4622225, 5595325, 7680275, 10918445, 17564455, 21262235, 54592225, 80796493, 87822275, 106311175, 403982465, 2019912325]

約数ペア:

[(1, 2019912325), (5, 403982465), (19, 106311175), (23, 87822275), (25, 80796493), (37, 54592225), (95, 21262235), (115, 17564455), (185, 10918445), (263, 7680275), (361, 5595325), (437, 4622225), (475, 4252447), (575, 3512891), (703, 2873275), (851, 2373575), (925, 2183689), (1315, 1536055), (1805, 1119065), (2185, 924445), (3515, 574655), (4255, 474715), (4997, 404225), (6049, 333925), (6575, 307211), (8303, 243275), (9025, 223813), (9731, 207575), (10925, 184889), (13357, 151225), (16169, 124925), (17575, 114931), (21275, 94943), (24985, 80845), (30245, 66785), (41515, 48655)]