28177900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6553}}^1$

素因数の和:6610

約数の個数: 36

約数和(自身を含む): 62577592

約数和(自身を除く): 34399692

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 6553, 13106, 26212, 32765, 65530, 131060, 163825, 281779, 327650, 563558, 655300, 1127116, 1408895, 2817790, 5635580, 7044475, 14088950, 28177900]

約数ペア:

[(1, 28177900), (2, 14088950), (4, 7044475), (5, 5635580), (10, 2817790), (20, 1408895), (25, 1127116), (43, 655300), (50, 563558), (86, 327650), (100, 281779), (172, 163825), (215, 131060), (430, 65530), (860, 32765), (1075, 26212), (2150, 13106), (4300, 6553)]