1818698980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{145963}}^1$

素因数の和:146068

約数の個数: 48

約数和(自身を含む): 4413951360

約数和(自身を除く): 2595252380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1780, 2492, 3115, 6230, 12460, 145963, 291926, 583852, 729815, 1021741, 1459630, 2043482, 2919260, 4086964, 5108705, 10217410, 12990707, 20434820, 25981414, 51962828, 64953535, 90934949, 129907070, 181869898, 259814140, 363739796, 454674745, 909349490, 1818698980]

約数ペア:

[(1, 1818698980), (2, 909349490), (4, 454674745), (5, 363739796), (7, 259814140), (10, 181869898), (14, 129907070), (20, 90934949), (28, 64953535), (35, 51962828), (70, 25981414), (89, 20434820), (140, 12990707), (178, 10217410), (356, 5108705), (445, 4086964), (623, 2919260), (890, 2043482), (1246, 1459630), (1780, 1021741), (2492, 729815), (3115, 583852), (6230, 291926), (12460, 145963)]