19997384

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2011}}^1$

素因数の和:2141

約数の個数: 32

約数和(自身を含む): 41286240

約数和(自身を除く): 21288856

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 113, 226, 452, 904, 1243, 2011, 2486, 4022, 4972, 8044, 9944, 16088, 22121, 44242, 88484, 176968, 227243, 454486, 908972, 1817944, 2499673, 4999346, 9998692, 19997384]

約数ペア:

[(1, 19997384), (2, 9998692), (4, 4999346), (8, 2499673), (11, 1817944), (22, 908972), (44, 454486), (88, 227243), (113, 176968), (226, 88484), (452, 44242), (904, 22121), (1243, 16088), (2011, 9944), (2486, 8044), (4022, 4972)]