16920680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 45246600

約数和(自身を除く): 28325920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 89, 97, 98, 140, 178, 194, 196, 245, 280, 356, 388, 392, 445, 485, 490, 623, 679, 712, 776, 890, 970, 980, 1246, 1358, 1780, 1940, 1960, 2492, 2716, 3115, 3395, 3560, 3880, 4361, 4753, 4984, 5432, 6230, 6790, 8633, 8722, 9506, 12460, 13580, 17266, 17444, 19012, 21805, 23765, 24920, 27160, 34532, 34888, 38024, 43165, 43610, 47530, 60431, 69064, 86330, 87220, 95060, 120862, 172660, 174440, 190120, 241724, 302155, 345320, 423017, 483448, 604310, 846034, 1208620, 1692068, 2115085, 2417240, 3384136, 4230170, 8460340, 16920680]

約数ペア:

[(1, 16920680), (2, 8460340), (4, 4230170), (5, 3384136), (7, 2417240), (8, 2115085), (10, 1692068), (14, 1208620), (20, 846034), (28, 604310), (35, 483448), (40, 423017), (49, 345320), (56, 302155), (70, 241724), (89, 190120), (97, 174440), (98, 172660), (140, 120862), (178, 95060), (194, 87220), (196, 86330), (245, 69064), (280, 60431), (356, 47530), (388, 43610), (392, 43165), (445, 38024), (485, 34888), (490, 34532), (623, 27160), (679, 24920), (712, 23765), (776, 21805), (890, 19012), (970, 17444), (980, 17266), (1246, 13580), (1358, 12460), (1780, 9506), (1940, 8722), (1960, 8633), (2492, 6790), (2716, 6230), (3115, 5432), (3395, 4984), (3560, 4753), (3880, 4361)]