21898340

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{6329}}^1$

素因数の和:6511

約数の個数: 24

約数和(自身を含む): 46259640

約数和(自身を除く): 24361300

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 6329, 12658, 25316, 31645, 63290, 126580, 1094917, 2189834, 4379668, 5474585, 10949170, 21898340]

約数ペア:

[(1, 21898340), (2, 10949170), (4, 5474585), (5, 4379668), (10, 2189834), (20, 1094917), (173, 126580), (346, 63290), (692, 31645), (865, 25316), (1730, 12658), (3460, 6329)]