217871390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{16369}}^1$

素因数の和:16409

約数の個数: 32

約数和(自身を含む): 431382240

約数和(自身を除く): 213510850

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 1331, 2662, 6655, 13310, 16369, 32738, 81845, 163690, 180059, 360118, 900295, 1800590, 1980649, 3961298, 9903245, 19806490, 21787139, 43574278, 108935695, 217871390]

約数ペア:

[(1, 217871390), (2, 108935695), (5, 43574278), (10, 21787139), (11, 19806490), (22, 9903245), (55, 3961298), (110, 1980649), (121, 1800590), (242, 900295), (605, 360118), (1210, 180059), (1331, 163690), (2662, 81845), (6655, 32738), (13310, 16369)]