20764940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1787}}^1$

素因数の和:1886

約数の個数: 48

約数和(自身を含む): 50464512

約数和(自身を除く): 29699572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 1787, 2324, 2905, 3574, 5810, 7148, 8935, 11620, 12509, 17870, 25018, 35740, 50036, 62545, 125090, 148321, 250180, 296642, 593284, 741605, 1038247, 1483210, 2076494, 2966420, 4152988, 5191235, 10382470, 20764940]

約数ペア:

[(1, 20764940), (2, 10382470), (4, 5191235), (5, 4152988), (7, 2966420), (10, 2076494), (14, 1483210), (20, 1038247), (28, 741605), (35, 593284), (70, 296642), (83, 250180), (140, 148321), (166, 125090), (332, 62545), (415, 50036), (581, 35740), (830, 25018), (1162, 17870), (1660, 12509), (1787, 11620), (2324, 8935), (2905, 7148), (3574, 5810)]