21408640

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3041}}^1$

素因数の和:3071

約数の個数: 64

約数和(自身を含む): 55851120

約数和(自身を除く): 34442480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 3041, 3520, 6082, 7040, 12164, 15205, 24328, 30410, 33451, 48656, 60820, 66902, 97312, 121640, 133804, 167255, 194624, 243280, 267608, 334510, 389248, 486560, 535216, 669020, 973120, 1070432, 1338040, 1946240, 2140864, 2676080, 4281728, 5352160, 10704320, 21408640]

約数ペア:

[(1, 21408640), (2, 10704320), (4, 5352160), (5, 4281728), (8, 2676080), (10, 2140864), (11, 1946240), (16, 1338040), (20, 1070432), (22, 973120), (32, 669020), (40, 535216), (44, 486560), (55, 389248), (64, 334510), (80, 267608), (88, 243280), (110, 194624), (128, 167255), (160, 133804), (176, 121640), (220, 97312), (320, 66902), (352, 60820), (440, 48656), (640, 33451), (704, 30410), (880, 24328), (1408, 15205), (1760, 12164), (3041, 7040), (3520, 6082)]