20194928

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1229}}^1$

素因数の和:1329

約数の個数: 40

約数和(自身を含む): 42705600

約数和(自身を除く): 22510672

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 79, 104, 158, 208, 316, 632, 1027, 1229, 1264, 2054, 2458, 4108, 4916, 8216, 9832, 15977, 16432, 19664, 31954, 63908, 97091, 127816, 194182, 255632, 388364, 776728, 1262183, 1553456, 2524366, 5048732, 10097464, 20194928]

約数ペア:

[(1, 20194928), (2, 10097464), (4, 5048732), (8, 2524366), (13, 1553456), (16, 1262183), (26, 776728), (52, 388364), (79, 255632), (104, 194182), (158, 127816), (208, 97091), (316, 63908), (632, 31954), (1027, 19664), (1229, 16432), (1264, 15977), (2054, 9832), (2458, 8216), (4108, 4916)]