21271580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3119}}^1$

素因数の和:3170

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 29047780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3119, 3410, 6238, 6820, 12476, 15595, 31190, 34309, 62380, 68618, 96689, 137236, 171545, 193378, 343090, 386756, 483445, 686180, 966890, 1063579, 1933780, 2127158, 4254316, 5317895, 10635790, 21271580]

約数ペア:

[(1, 21271580), (2, 10635790), (4, 5317895), (5, 4254316), (10, 2127158), (11, 1933780), (20, 1063579), (22, 966890), (31, 686180), (44, 483445), (55, 386756), (62, 343090), (110, 193378), (124, 171545), (155, 137236), (220, 96689), (310, 68618), (341, 62380), (620, 34309), (682, 31190), (1364, 15595), (1705, 12476), (3119, 6820), (3410, 6238)]