18720928

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{751}}^1$

素因数の和:821

約数の個数: 48

約数和(自身を含む): 39795840

約数和(自身を除く): 21074912

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 76, 82, 152, 164, 304, 328, 608, 656, 751, 779, 1312, 1502, 1558, 3004, 3116, 6008, 6232, 12016, 12464, 14269, 24032, 24928, 28538, 30791, 57076, 61582, 114152, 123164, 228304, 246328, 456608, 492656, 585029, 985312, 1170058, 2340116, 4680232, 9360464, 18720928]

約数ペア:

[(1, 18720928), (2, 9360464), (4, 4680232), (8, 2340116), (16, 1170058), (19, 985312), (32, 585029), (38, 492656), (41, 456608), (76, 246328), (82, 228304), (152, 123164), (164, 114152), (304, 61582), (328, 57076), (608, 30791), (656, 28538), (751, 24928), (779, 24032), (1312, 14269), (1502, 12464), (1558, 12016), (3004, 6232), (3116, 6008)]