28978000

素因数分解:

$2^4\times 5^3\times {\mathrm{14489}}^1$

素因数の和:14512

約数の個数: 40

約数和(自身を含む): 70073640

約数和(自身を除く): 41095640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 14489, 28978, 57956, 72445, 115912, 144890, 231824, 289780, 362225, 579560, 724450, 1159120, 1448900, 1811125, 2897800, 3622250, 5795600, 7244500, 14489000, 28978000]

約数ペア:

[(1, 28978000), (2, 14489000), (4, 7244500), (5, 5795600), (8, 3622250), (10, 2897800), (16, 1811125), (20, 1448900), (25, 1159120), (40, 724450), (50, 579560), (80, 362225), (100, 289780), (125, 231824), (200, 144890), (250, 115912), (400, 72445), (500, 57956), (1000, 28978), (2000, 14489)]