21487770

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{929}}^1$

素因数の和:1199

約数の個数: 48

約数和(自身を含む): 56145960

約数和(自身を除く): 34658190

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 257, 514, 771, 929, 1285, 1542, 1858, 2313, 2570, 2787, 3855, 4626, 4645, 5574, 7710, 8361, 9290, 11565, 13935, 16722, 23130, 27870, 41805, 83610, 238753, 477506, 716259, 1193765, 1432518, 2148777, 2387530, 3581295, 4297554, 7162590, 10743885, 21487770]

約数ペア:

[(1, 21487770), (2, 10743885), (3, 7162590), (5, 4297554), (6, 3581295), (9, 2387530), (10, 2148777), (15, 1432518), (18, 1193765), (30, 716259), (45, 477506), (90, 238753), (257, 83610), (514, 41805), (771, 27870), (929, 23130), (1285, 16722), (1542, 13935), (1858, 11565), (2313, 9290), (2570, 8361), (2787, 7710), (3855, 5574), (4626, 4645)]