20213816

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1249}}^1$

素因数の和:1296

約数の個数: 48

約数和(自身を含む): 46050000

約数和(自身を除く): 25836184

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 238, 289, 476, 578, 952, 1156, 1249, 2023, 2312, 2498, 4046, 4996, 8092, 8743, 9992, 16184, 17486, 21233, 34972, 42466, 69944, 84932, 148631, 169864, 297262, 360961, 594524, 721922, 1189048, 1443844, 2526727, 2887688, 5053454, 10106908, 20213816]

約数ペア:

[(1, 20213816), (2, 10106908), (4, 5053454), (7, 2887688), (8, 2526727), (14, 1443844), (17, 1189048), (28, 721922), (34, 594524), (56, 360961), (68, 297262), (119, 169864), (136, 148631), (238, 84932), (289, 69944), (476, 42466), (578, 34972), (952, 21233), (1156, 17486), (1249, 16184), (2023, 9992), (2312, 8743), (2498, 8092), (4046, 4996)]