21277893

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1901}}^1$

素因数の和:1965

約数の個数: 32

約数和(自身を含む): 35788032

約数和(自身を除く): 14510139

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 1901, 3731, 5703, 11193, 13307, 24713, 39921, 74139, 77941, 172991, 233823, 518973, 545587, 1013233, 1636761, 3039699, 7092631, 21277893]

約数ペア:

[(1, 21277893), (3, 7092631), (7, 3039699), (13, 1636761), (21, 1013233), (39, 545587), (41, 518973), (91, 233823), (123, 172991), (273, 77941), (287, 74139), (533, 39921), (861, 24713), (1599, 13307), (1901, 11193), (3731, 5703)]