18946180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7829}}^1$

素因数の和:7860

約数の個数: 36

約数和(自身を含む): 43738380

約数和(自身を除く): 24792200

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7829, 15658, 31316, 39145, 78290, 86119, 156580, 172238, 344476, 430595, 861190, 947309, 1722380, 1894618, 3789236, 4736545, 9473090, 18946180]

約数ペア:

[(1, 18946180), (2, 9473090), (4, 4736545), (5, 3789236), (10, 1894618), (11, 1722380), (20, 947309), (22, 861190), (44, 430595), (55, 344476), (110, 172238), (121, 156580), (220, 86119), (242, 78290), (484, 39145), (605, 31316), (1210, 15658), (2420, 7829)]