20444500

素因数分解:

$2^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{1319}}^1$

素因数の和:1369

約数の個数: 48

約数和(自身を含む): 46126080

約数和(自身を除く): 25681580

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 500, 620, 775, 1319, 1550, 2638, 3100, 3875, 5276, 6595, 7750, 13190, 15500, 26380, 32975, 40889, 65950, 81778, 131900, 163556, 164875, 204445, 329750, 408890, 659500, 817780, 1022225, 2044450, 4088900, 5111125, 10222250, 20444500]

約数ペア:

[(1, 20444500), (2, 10222250), (4, 5111125), (5, 4088900), (10, 2044450), (20, 1022225), (25, 817780), (31, 659500), (50, 408890), (62, 329750), (100, 204445), (124, 164875), (125, 163556), (155, 131900), (250, 81778), (310, 65950), (500, 40889), (620, 32975), (775, 26380), (1319, 15500), (1550, 13190), (2638, 7750), (3100, 6595), (3875, 5276)]