21664960

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{857}}^1$

素因数の和:953

約数の個数: 56

約数和(自身を含む): 52303680

約数和(自身を除く): 30638720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 857, 1264, 1580, 1714, 2528, 3160, 3428, 4285, 5056, 6320, 6856, 8570, 12640, 13712, 17140, 25280, 27424, 34280, 54848, 67703, 68560, 135406, 137120, 270812, 274240, 338515, 541624, 677030, 1083248, 1354060, 2166496, 2708120, 4332992, 5416240, 10832480, 21664960]

約数ペア:

[(1, 21664960), (2, 10832480), (4, 5416240), (5, 4332992), (8, 2708120), (10, 2166496), (16, 1354060), (20, 1083248), (32, 677030), (40, 541624), (64, 338515), (79, 274240), (80, 270812), (158, 137120), (160, 135406), (316, 68560), (320, 67703), (395, 54848), (632, 34280), (790, 27424), (857, 25280), (1264, 17140), (1580, 13712), (1714, 12640), (2528, 8570), (3160, 6856), (3428, 6320), (4285, 5056)]