80521240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{1049}}^1$

素因数の和:1180

約数の個数: 64

約数和(自身を含む): 192780000

約数和(自身を除く): 112258760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 101, 152, 190, 202, 380, 404, 505, 760, 808, 1010, 1049, 1919, 2020, 2098, 3838, 4040, 4196, 5245, 7676, 8392, 9595, 10490, 15352, 19190, 19931, 20980, 38380, 39862, 41960, 76760, 79724, 99655, 105949, 159448, 199310, 211898, 398620, 423796, 529745, 797240, 847592, 1059490, 2013031, 2118980, 4026062, 4237960, 8052124, 10065155, 16104248, 20130310, 40260620, 80521240]

約数ペア:

[(1, 80521240), (2, 40260620), (4, 20130310), (5, 16104248), (8, 10065155), (10, 8052124), (19, 4237960), (20, 4026062), (38, 2118980), (40, 2013031), (76, 1059490), (95, 847592), (101, 797240), (152, 529745), (190, 423796), (202, 398620), (380, 211898), (404, 199310), (505, 159448), (760, 105949), (808, 99655), (1010, 79724), (1049, 76760), (1919, 41960), (2020, 39862), (2098, 38380), (3838, 20980), (4040, 19931), (4196, 19190), (5245, 15352), (7676, 10490), (8392, 9595)]