21242750

素因数分解:

$2^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{2741}}^1$

素因数の和:2789

約数の個数: 32

約数和(自身を含む): 41064192

約数和(自身を除く): 19821442

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 775, 1550, 2741, 3875, 5482, 7750, 13705, 27410, 68525, 84971, 137050, 169942, 342625, 424855, 685250, 849710, 2124275, 4248550, 10621375, 21242750]

約数ペア:

[(1, 21242750), (2, 10621375), (5, 4248550), (10, 2124275), (25, 849710), (31, 685250), (50, 424855), (62, 342625), (125, 169942), (155, 137050), (250, 84971), (310, 68525), (775, 27410), (1550, 13705), (2741, 7750), (3875, 5482)]