21758142

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{821}}^1$

素因数の和:1464

約数の個数: 32

約数和(自身を含む): 49872384

約数和(自身を除く): 28114242

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 631, 821, 1262, 1642, 1893, 2463, 3786, 4417, 4926, 5747, 8834, 11494, 13251, 17241, 26502, 34482, 518051, 1036102, 1554153, 3108306, 3626357, 7252714, 10879071, 21758142]

約数ペア:

[(1, 21758142), (2, 10879071), (3, 7252714), (6, 3626357), (7, 3108306), (14, 1554153), (21, 1036102), (42, 518051), (631, 34482), (821, 26502), (1262, 17241), (1642, 13251), (1893, 11494), (2463, 8834), (3786, 5747), (4417, 4926)]