138903560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{112019}}^1$

素因数の和:112061

約数の個数: 32

約数和(自身を含む): 322617600

約数和(自身を除く): 183714040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 112019, 224038, 448076, 560095, 896152, 1120190, 2240380, 3472589, 4480760, 6945178, 13890356, 17362945, 27780712, 34725890, 69451780, 138903560]

約数ペア:

[(1, 138903560), (2, 69451780), (4, 34725890), (5, 27780712), (8, 17362945), (10, 13890356), (20, 6945178), (31, 4480760), (40, 3472589), (62, 2240380), (124, 1120190), (155, 896152), (248, 560095), (310, 448076), (620, 224038), (1240, 112019)]