198387440

素因数分解:

$2^4\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{2273}}^1$

素因数の和:3377

約数の個数: 40

約数和(自身を含む): 461876688

約数和(自身を除く): 263489248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1091, 2182, 2273, 4364, 4546, 5455, 8728, 9092, 10910, 11365, 17456, 18184, 21820, 22730, 36368, 43640, 45460, 87280, 90920, 181840, 2479843, 4959686, 9919372, 12399215, 19838744, 24798430, 39677488, 49596860, 99193720, 198387440]

約数ペア:

[(1, 198387440), (2, 99193720), (4, 49596860), (5, 39677488), (8, 24798430), (10, 19838744), (16, 12399215), (20, 9919372), (40, 4959686), (80, 2479843), (1091, 181840), (2182, 90920), (2273, 87280), (4364, 45460), (4546, 43640), (5455, 36368), (8728, 22730), (9092, 21820), (10910, 18184), (11365, 17456)]