21121199

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{2693}}^1$

素因数の和:2758

約数の個数: 16

約数和(自身を含む): 24827904

約数和(自身を除く): 3706705

約数列:

[1, 11, 23, 31, 253, 341, 713, 2693, 7843, 29623, 61939, 83483, 681329, 918313, 1920109, 21121199]

約数ペア:

[(1, 21121199), (11, 1920109), (23, 918313), (31, 681329), (253, 83483), (341, 61939), (713, 29623), (2693, 7843)]