21870190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70549}}^1$

素因数の和:70587

約数の個数: 16

約数和(自身を含む): 40636800

約数和(自身を除く): 18766610

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70549, 141098, 352745, 705490, 2187019, 4374038, 10935095, 21870190]

約数ペア:

[(1, 21870190), (2, 10935095), (5, 4374038), (10, 2187019), (31, 705490), (62, 352745), (155, 141098), (310, 70549)]