21825980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{311}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 30458980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 121, 145, 220, 242, 290, 311, 319, 484, 580, 605, 622, 638, 1210, 1244, 1276, 1555, 1595, 2420, 3110, 3190, 3421, 3509, 6220, 6380, 6842, 7018, 9019, 13684, 14036, 17105, 17545, 18038, 34210, 35090, 36076, 37631, 45095, 68420, 70180, 75262, 90190, 99209, 150524, 180380, 188155, 198418, 376310, 396836, 496045, 752620, 992090, 1091299, 1984180, 2182598, 4365196, 5456495, 10912990, 21825980]

約数ペア:

[(1, 21825980), (2, 10912990), (4, 5456495), (5, 4365196), (10, 2182598), (11, 1984180), (20, 1091299), (22, 992090), (29, 752620), (44, 496045), (55, 396836), (58, 376310), (110, 198418), (116, 188155), (121, 180380), (145, 150524), (220, 99209), (242, 90190), (290, 75262), (311, 70180), (319, 68420), (484, 45095), (580, 37631), (605, 36076), (622, 35090), (638, 34210), (1210, 18038), (1244, 17545), (1276, 17105), (1555, 14036), (1595, 13684), (2420, 9019), (3110, 7018), (3190, 6842), (3421, 6380), (3509, 6220)]