21106880

素因数分解:

$2^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{929}}^1$

素因数の和:1017

約数の個数: 56

約数和(自身を含む): 51023520

約数和(自身を除く): 29916640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 142, 160, 284, 320, 355, 568, 710, 929, 1136, 1420, 1858, 2272, 2840, 3716, 4544, 4645, 5680, 7432, 9290, 11360, 14864, 18580, 22720, 29728, 37160, 59456, 65959, 74320, 131918, 148640, 263836, 297280, 329795, 527672, 659590, 1055344, 1319180, 2110688, 2638360, 4221376, 5276720, 10553440, 21106880]

約数ペア:

[(1, 21106880), (2, 10553440), (4, 5276720), (5, 4221376), (8, 2638360), (10, 2110688), (16, 1319180), (20, 1055344), (32, 659590), (40, 527672), (64, 329795), (71, 297280), (80, 263836), (142, 148640), (160, 131918), (284, 74320), (320, 65959), (355, 59456), (568, 37160), (710, 29728), (929, 22720), (1136, 18580), (1420, 14864), (1858, 11360), (2272, 9290), (2840, 7432), (3716, 5680), (4544, 4645)]