28063960

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 65318400

約数和(自身を除く): 37254440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 83, 107, 158, 166, 214, 316, 332, 395, 415, 428, 535, 632, 664, 790, 830, 856, 1070, 1580, 1660, 2140, 3160, 3320, 4280, 6557, 8453, 8881, 13114, 16906, 17762, 26228, 32785, 33812, 35524, 42265, 44405, 52456, 65570, 67624, 71048, 84530, 88810, 131140, 169060, 177620, 262280, 338120, 355240, 701599, 1403198, 2806396, 3507995, 5612792, 7015990, 14031980, 28063960]

約数ペア:

[(1, 28063960), (2, 14031980), (4, 7015990), (5, 5612792), (8, 3507995), (10, 2806396), (20, 1403198), (40, 701599), (79, 355240), (83, 338120), (107, 262280), (158, 177620), (166, 169060), (214, 131140), (316, 88810), (332, 84530), (395, 71048), (415, 67624), (428, 65570), (535, 52456), (632, 44405), (664, 42265), (790, 35524), (830, 33812), (856, 32785), (1070, 26228), (1580, 17762), (1660, 16906), (2140, 13114), (3160, 8881), (3320, 8453), (4280, 6557)]