20199778864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{297967}}^1$

素因数の和:298217

約数の個数: 40

約数和(自身を含む): 41381795840

約数和(自身を除く): 21182016976

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 223, 304, 446, 892, 1784, 3568, 4237, 8474, 16948, 33896, 67792, 297967, 595934, 1191868, 2383736, 4767472, 5661373, 11322746, 22645492, 45290984, 66446641, 90581968, 132893282, 265786564, 531573128, 1063146256, 1262486179, 2524972358, 5049944716, 10099889432, 20199778864]

約数ペア:

[(1, 20199778864), (2, 10099889432), (4, 5049944716), (8, 2524972358), (16, 1262486179), (19, 1063146256), (38, 531573128), (76, 265786564), (152, 132893282), (223, 90581968), (304, 66446641), (446, 45290984), (892, 22645492), (1784, 11322746), (3568, 5661373), (4237, 4767472), (8474, 2383736), (16948, 1191868), (33896, 595934), (67792, 297967)]