20728372225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{379}}^1\times {\mathrm{8647}}^1$

素因数の和:9070

約数の個数: 48

約数和(自身を含む): 29339550720

約数和(自身を除く): 8611178495

約数列:

[1, 5, 11, 23, 25, 55, 115, 253, 275, 379, 575, 1265, 1895, 4169, 6325, 8647, 8717, 9475, 20845, 43235, 43585, 95117, 95887, 104225, 198881, 216175, 217925, 475585, 479435, 994405, 2187691, 2377925, 2397175, 3277213, 4972025, 10938455, 16386065, 36049343, 54692275, 75375899, 81930325, 180246715, 376879495, 829134889, 901233575, 1884397475, 4145674445, 20728372225]

約数ペア:

[(1, 20728372225), (5, 4145674445), (11, 1884397475), (23, 901233575), (25, 829134889), (55, 376879495), (115, 180246715), (253, 81930325), (275, 75375899), (379, 54692275), (575, 36049343), (1265, 16386065), (1895, 10938455), (4169, 4972025), (6325, 3277213), (8647, 2397175), (8717, 2377925), (9475, 2187691), (20845, 994405), (43235, 479435), (43585, 475585), (95117, 217925), (95887, 216175), (104225, 198881)]