20460640

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3119}}^1$

素因数の和:3175

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 29072480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3119, 3280, 6238, 6560, 12476, 15595, 24952, 31190, 49904, 62380, 99808, 124760, 127879, 249520, 255758, 499040, 511516, 639395, 1023032, 1278790, 2046064, 2557580, 4092128, 5115160, 10230320, 20460640]

約数ペア:

[(1, 20460640), (2, 10230320), (4, 5115160), (5, 4092128), (8, 2557580), (10, 2046064), (16, 1278790), (20, 1023032), (32, 639395), (40, 511516), (41, 499040), (80, 255758), (82, 249520), (160, 127879), (164, 124760), (205, 99808), (328, 62380), (410, 49904), (656, 31190), (820, 24952), (1312, 15595), (1640, 12476), (3119, 6560), (3280, 6238)]