81080500

素因数分解:

$2^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{5231}}^1$

素因数の和:5281

約数の個数: 48

約数和(自身を含む): 182827008

約数和(自身を除く): 101746508

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 500, 620, 775, 1550, 3100, 3875, 5231, 7750, 10462, 15500, 20924, 26155, 52310, 104620, 130775, 162161, 261550, 324322, 523100, 648644, 653875, 810805, 1307750, 1621610, 2615500, 3243220, 4054025, 8108050, 16216100, 20270125, 40540250, 81080500]

約数ペア:

[(1, 81080500), (2, 40540250), (4, 20270125), (5, 16216100), (10, 8108050), (20, 4054025), (25, 3243220), (31, 2615500), (50, 1621610), (62, 1307750), (100, 810805), (124, 653875), (125, 648644), (155, 523100), (250, 324322), (310, 261550), (500, 162161), (620, 130775), (775, 104620), (1550, 52310), (3100, 26155), (3875, 20924), (5231, 15500), (7750, 10462)]