21149968

素因数分解:

$2^4\times 7^2\times {\mathrm{53}}^1\times {\mathrm{509}}^1$

素因数の和:584

約数の個数: 60

約数和(自身を含む): 48663180

約数和(自身を除く): 27513212

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 53, 56, 98, 106, 112, 196, 212, 371, 392, 424, 509, 742, 784, 848, 1018, 1484, 2036, 2597, 2968, 3563, 4072, 5194, 5936, 7126, 8144, 10388, 14252, 20776, 24941, 26977, 28504, 41552, 49882, 53954, 57008, 99764, 107908, 188839, 199528, 215816, 377678, 399056, 431632, 755356, 1321873, 1510712, 2643746, 3021424, 5287492, 10574984, 21149968]

約数ペア:

[(1, 21149968), (2, 10574984), (4, 5287492), (7, 3021424), (8, 2643746), (14, 1510712), (16, 1321873), (28, 755356), (49, 431632), (53, 399056), (56, 377678), (98, 215816), (106, 199528), (112, 188839), (196, 107908), (212, 99764), (371, 57008), (392, 53954), (424, 49882), (509, 41552), (742, 28504), (784, 26977), (848, 24941), (1018, 20776), (1484, 14252), (2036, 10388), (2597, 8144), (2968, 7126), (3563, 5936), (4072, 5194)]