19729744

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:559

約数の個数: 40

約数和(自身を含む): 40030920

約数和(自身を除く): 20301176

約数列:

[1, 2, 4, 8, 16, 29, 58, 101, 116, 202, 232, 404, 421, 464, 808, 842, 1616, 1684, 2929, 3368, 5858, 6736, 11716, 12209, 23432, 24418, 42521, 46864, 48836, 85042, 97672, 170084, 195344, 340168, 680336, 1233109, 2466218, 4932436, 9864872, 19729744]

約数ペア:

[(1, 19729744), (2, 9864872), (4, 4932436), (8, 2466218), (16, 1233109), (29, 680336), (58, 340168), (101, 195344), (116, 170084), (202, 97672), (232, 85042), (404, 48836), (421, 46864), (464, 42521), (808, 24418), (842, 23432), (1616, 12209), (1684, 11716), (2929, 6736), (3368, 5858)]