21995908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 44049600

約数和(自身を除く): 22053692

約数列:

[1, 2, 4, 11, 22, 37, 44, 59, 74, 118, 148, 229, 236, 407, 458, 649, 814, 916, 1298, 1628, 2183, 2519, 2596, 4366, 5038, 8473, 8732, 10076, 13511, 16946, 24013, 27022, 33892, 48026, 54044, 93203, 96052, 148621, 186406, 297242, 372812, 499907, 594484, 999814, 1999628, 5498977, 10997954, 21995908]

約数ペア:

[(1, 21995908), (2, 10997954), (4, 5498977), (11, 1999628), (22, 999814), (37, 594484), (44, 499907), (59, 372812), (74, 297242), (118, 186406), (148, 148621), (229, 96052), (236, 93203), (407, 54044), (458, 48026), (649, 33892), (814, 27022), (916, 24013), (1298, 16946), (1628, 13511), (2183, 10076), (2519, 8732), (2596, 8473), (4366, 5038)]