21921309178

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{353}}^1\times {\mathrm{421}}^1\times {\mathrm{563}}^1$

素因数の和:1470

約数の個数: 32

約数和(自身を含む): 33364913472

約数和(自身を除く): 11443604294

約数列:

[1, 2, 131, 262, 353, 421, 563, 706, 842, 1126, 46243, 55151, 73753, 92486, 110302, 147506, 148613, 198739, 237023, 297226, 397478, 474046, 19468303, 26034809, 31050013, 38936606, 52069618, 62100026, 83669119, 167338238, 10960654589, 21921309178]

約数ペア:

[(1, 21921309178), (2, 10960654589), (131, 167338238), (262, 83669119), (353, 62100026), (421, 52069618), (563, 38936606), (706, 31050013), (842, 26034809), (1126, 19468303), (46243, 474046), (55151, 397478), (73753, 297226), (92486, 237023), (110302, 198739), (147506, 148613)]