21777190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70249}}^1$

素因数の和:70287

約数の個数: 16

約数和(自身を含む): 40464000

約数和(自身を除く): 18686810

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70249, 140498, 351245, 702490, 2177719, 4355438, 10888595, 21777190]

約数ペア:

[(1, 21777190), (2, 10888595), (5, 4355438), (10, 2177719), (31, 702490), (62, 351245), (155, 140498), (310, 70249)]