19861240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{797}}^1$

素因数の和:904

約数の個数: 64

約数和(自身を含む): 51710400

約数和(自身を除く): 31849160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 797, 890, 1246, 1594, 1780, 2492, 3115, 3188, 3560, 3985, 4984, 5579, 6230, 6376, 7970, 11158, 12460, 15940, 22316, 24920, 27895, 31880, 44632, 55790, 70933, 111580, 141866, 223160, 283732, 354665, 496531, 567464, 709330, 993062, 1418660, 1986124, 2482655, 2837320, 3972248, 4965310, 9930620, 19861240]

約数ペア:

[(1, 19861240), (2, 9930620), (4, 4965310), (5, 3972248), (7, 2837320), (8, 2482655), (10, 1986124), (14, 1418660), (20, 993062), (28, 709330), (35, 567464), (40, 496531), (56, 354665), (70, 283732), (89, 223160), (140, 141866), (178, 111580), (280, 70933), (356, 55790), (445, 44632), (623, 31880), (712, 27895), (797, 24920), (890, 22316), (1246, 15940), (1594, 12460), (1780, 11158), (2492, 7970), (3115, 6376), (3188, 6230), (3560, 5579), (3985, 4984)]