20819260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1229}}^1$

素因数の和:1267

約数の個数: 72

約数和(自身を含む): 54966240

約数和(自身を除く): 34146980

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1229, 1540, 1694, 2420, 2458, 3388, 4235, 4916, 6145, 8470, 8603, 12290, 13519, 16940, 17206, 24580, 27038, 34412, 43015, 54076, 67595, 86030, 94633, 135190, 148709, 172060, 189266, 270380, 297418, 378532, 473165, 594836, 743545, 946330, 1040963, 1487090, 1892660, 2081926, 2974180, 4163852, 5204815, 10409630, 20819260]

約数ペア:

[(1, 20819260), (2, 10409630), (4, 5204815), (5, 4163852), (7, 2974180), (10, 2081926), (11, 1892660), (14, 1487090), (20, 1040963), (22, 946330), (28, 743545), (35, 594836), (44, 473165), (55, 378532), (70, 297418), (77, 270380), (110, 189266), (121, 172060), (140, 148709), (154, 135190), (220, 94633), (242, 86030), (308, 67595), (385, 54076), (484, 43015), (605, 34412), (770, 27038), (847, 24580), (1210, 17206), (1229, 16940), (1540, 13519), (1694, 12290), (2420, 8603), (2458, 8470), (3388, 6145), (4235, 4916)]