20643424

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{1787}}^1$

素因数の和:1835

約数の個数: 36

約数和(自身を含む): 42917364

約数和(自身を除く): 22273940

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 304, 361, 608, 722, 1444, 1787, 2888, 3574, 5776, 7148, 11552, 14296, 28592, 33953, 57184, 67906, 135812, 271624, 543248, 645107, 1086496, 1290214, 2580428, 5160856, 10321712, 20643424]

約数ペア:

[(1, 20643424), (2, 10321712), (4, 5160856), (8, 2580428), (16, 1290214), (19, 1086496), (32, 645107), (38, 543248), (76, 271624), (152, 135812), (304, 67906), (361, 57184), (608, 33953), (722, 28592), (1444, 14296), (1787, 11552), (2888, 7148), (3574, 5776)]