21519212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2213}}^1$

素因数の和:2258

約数の個数: 48

約数和(自身を含む): 46865952

約数和(自身を除く): 25346740

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 187, 221, 286, 374, 442, 572, 748, 884, 2213, 2431, 4426, 4862, 8852, 9724, 24343, 28769, 37621, 48686, 57538, 75242, 97372, 115076, 150484, 316459, 413831, 489073, 632918, 827662, 978146, 1265836, 1655324, 1956292, 5379803, 10759606, 21519212]

約数ペア:

[(1, 21519212), (2, 10759606), (4, 5379803), (11, 1956292), (13, 1655324), (17, 1265836), (22, 978146), (26, 827662), (34, 632918), (44, 489073), (52, 413831), (68, 316459), (143, 150484), (187, 115076), (221, 97372), (286, 75242), (374, 57538), (442, 48686), (572, 37621), (748, 28769), (884, 24343), (2213, 9724), (2431, 8852), (4426, 4862)]