19681744

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{677}}^1$

素因数の和:787

約数の個数: 40

約数和(自身を含む): 40354560

約数和(自身を除く): 20672816

約数列:

[1, 2, 4, 8, 16, 23, 46, 79, 92, 158, 184, 316, 368, 632, 677, 1264, 1354, 1817, 2708, 3634, 5416, 7268, 10832, 14536, 15571, 29072, 31142, 53483, 62284, 106966, 124568, 213932, 249136, 427864, 855728, 1230109, 2460218, 4920436, 9840872, 19681744]

約数ペア:

[(1, 19681744), (2, 9840872), (4, 4920436), (8, 2460218), (16, 1230109), (23, 855728), (46, 427864), (79, 249136), (92, 213932), (158, 124568), (184, 106966), (316, 62284), (368, 53483), (632, 31142), (677, 29072), (1264, 15571), (1354, 14536), (1817, 10832), (2708, 7268), (3634, 5416)]