213117560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{171869}}^1$

素因数の和:171911

約数の個数: 32

約数和(自身を含む): 494985600

約数和(自身を除く): 281868040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 171869, 343738, 687476, 859345, 1374952, 1718690, 3437380, 5327939, 6874760, 10655878, 21311756, 26639695, 42623512, 53279390, 106558780, 213117560]

約数ペア:

[(1, 213117560), (2, 106558780), (4, 53279390), (5, 42623512), (8, 26639695), (10, 21311756), (20, 10655878), (31, 6874760), (40, 5327939), (62, 3437380), (124, 1718690), (155, 1374952), (248, 859345), (310, 687476), (620, 343738), (1240, 171869)]