21716344

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 47355840

約数和(自身を除く): 25639496

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 71, 104, 136, 142, 173, 221, 284, 346, 442, 568, 692, 884, 923, 1207, 1384, 1768, 1846, 2249, 2414, 2941, 3692, 4498, 4828, 5882, 7384, 8996, 9656, 11764, 12283, 15691, 17992, 23528, 24566, 31382, 38233, 49132, 62764, 76466, 98264, 125528, 152932, 159679, 208811, 305864, 319358, 417622, 638716, 835244, 1277432, 1670488, 2714543, 5429086, 10858172, 21716344]

約数ペア:

[(1, 21716344), (2, 10858172), (4, 5429086), (8, 2714543), (13, 1670488), (17, 1277432), (26, 835244), (34, 638716), (52, 417622), (68, 319358), (71, 305864), (104, 208811), (136, 159679), (142, 152932), (173, 125528), (221, 98264), (284, 76466), (346, 62764), (442, 49132), (568, 38233), (692, 31382), (884, 24566), (923, 23528), (1207, 17992), (1384, 15691), (1768, 12283), (1846, 11764), (2249, 9656), (2414, 8996), (2941, 7384), (3692, 5882), (4498, 4828)]