21047450

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 41616384

約数和(自身を除く): 20568934

約数列:

[1, 2, 5, 10, 25, 31, 37, 50, 62, 74, 155, 185, 310, 367, 370, 734, 775, 925, 1147, 1550, 1835, 1850, 2294, 3670, 5735, 9175, 11377, 11470, 13579, 18350, 22754, 27158, 28675, 56885, 57350, 67895, 113770, 135790, 284425, 339475, 420949, 568850, 678950, 841898, 2104745, 4209490, 10523725, 21047450]

約数ペア:

[(1, 21047450), (2, 10523725), (5, 4209490), (10, 2104745), (25, 841898), (31, 678950), (37, 568850), (50, 420949), (62, 339475), (74, 284425), (155, 135790), (185, 113770), (310, 67895), (367, 57350), (370, 56885), (734, 28675), (775, 27158), (925, 22754), (1147, 18350), (1550, 13579), (1835, 11470), (1850, 11377), (2294, 9175), (3670, 5735)]