211891428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{840839}}^1$

素因数の和:840856

約数の個数: 36

約数和(自身を含む): 612131520

約数和(自身を除く): 400240092

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 840839, 1681678, 2522517, 3363356, 5045034, 5885873, 7567551, 10090068, 11771746, 15135102, 17657619, 23543492, 30270204, 35315238, 52972857, 70630476, 105945714, 211891428]

約数ペア:

[(1, 211891428), (2, 105945714), (3, 70630476), (4, 52972857), (6, 35315238), (7, 30270204), (9, 23543492), (12, 17657619), (14, 15135102), (18, 11771746), (21, 10090068), (28, 7567551), (36, 5885873), (42, 5045034), (63, 3363356), (84, 2522517), (126, 1681678), (252, 840839)]