18789100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:104

約数の個数: 144

約数和(自身を含む): 49996800

約数和(自身を除く): 31207700

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 29, 31, 38, 44, 50, 55, 58, 62, 76, 95, 100, 110, 116, 124, 145, 155, 190, 209, 220, 275, 290, 310, 319, 341, 380, 418, 475, 550, 551, 580, 589, 620, 638, 682, 725, 775, 836, 899, 950, 1045, 1100, 1102, 1178, 1276, 1364, 1450, 1550, 1595, 1705, 1798, 1900, 2090, 2204, 2356, 2755, 2900, 2945, 3100, 3190, 3410, 3596, 4180, 4495, 5225, 5510, 5890, 6061, 6380, 6479, 6820, 7975, 8525, 8990, 9889, 10450, 11020, 11780, 12122, 12958, 13775, 14725, 15950, 17050, 17081, 17980, 19778, 20900, 22475, 24244, 25916, 27550, 29450, 30305, 31900, 32395, 34100, 34162, 39556, 44950, 49445, 55100, 58900, 60610, 64790, 68324, 85405, 89900, 98890, 121220, 129580, 151525, 161975, 170810, 187891, 197780, 247225, 303050, 323950, 341620, 375782, 427025, 494450, 606100, 647900, 751564, 854050, 939455, 988900, 1708100, 1878910, 3757820, 4697275, 9394550, 18789100]

約数ペア:

[(1, 18789100), (2, 9394550), (4, 4697275), (5, 3757820), (10, 1878910), (11, 1708100), (19, 988900), (20, 939455), (22, 854050), (25, 751564), (29, 647900), (31, 606100), (38, 494450), (44, 427025), (50, 375782), (55, 341620), (58, 323950), (62, 303050), (76, 247225), (95, 197780), (100, 187891), (110, 170810), (116, 161975), (124, 151525), (145, 129580), (155, 121220), (190, 98890), (209, 89900), (220, 85405), (275, 68324), (290, 64790), (310, 60610), (319, 58900), (341, 55100), (380, 49445), (418, 44950), (475, 39556), (550, 34162), (551, 34100), (580, 32395), (589, 31900), (620, 30305), (638, 29450), (682, 27550), (725, 25916), (775, 24244), (836, 22475), (899, 20900), (950, 19778), (1045, 17980), (1100, 17081), (1102, 17050), (1178, 15950), (1276, 14725), (1364, 13775), (1450, 12958), (1550, 12122), (1595, 11780), (1705, 11020), (1798, 10450), (1900, 9889), (2090, 8990), (2204, 8525), (2356, 7975), (2755, 6820), (2900, 6479), (2945, 6380), (3100, 6061), (3190, 5890), (3410, 5510), (3596, 5225), (4180, 4495)]