20546540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 53343360

約数和(自身を除く): 32796820

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 89, 97, 119, 140, 170, 178, 194, 238, 340, 356, 388, 445, 476, 485, 595, 623, 679, 890, 970, 1190, 1246, 1358, 1513, 1649, 1780, 1940, 2380, 2492, 2716, 3026, 3115, 3298, 3395, 6052, 6230, 6596, 6790, 7565, 8245, 8633, 10591, 11543, 12460, 13580, 15130, 16490, 17266, 21182, 23086, 30260, 32980, 34532, 42364, 43165, 46172, 52955, 57715, 60431, 86330, 105910, 115430, 120862, 146761, 172660, 211820, 230860, 241724, 293522, 302155, 587044, 604310, 733805, 1027327, 1208620, 1467610, 2054654, 2935220, 4109308, 5136635, 10273270, 20546540]

約数ペア:

[(1, 20546540), (2, 10273270), (4, 5136635), (5, 4109308), (7, 2935220), (10, 2054654), (14, 1467610), (17, 1208620), (20, 1027327), (28, 733805), (34, 604310), (35, 587044), (68, 302155), (70, 293522), (85, 241724), (89, 230860), (97, 211820), (119, 172660), (140, 146761), (170, 120862), (178, 115430), (194, 105910), (238, 86330), (340, 60431), (356, 57715), (388, 52955), (445, 46172), (476, 43165), (485, 42364), (595, 34532), (623, 32980), (679, 30260), (890, 23086), (970, 21182), (1190, 17266), (1246, 16490), (1358, 15130), (1513, 13580), (1649, 12460), (1780, 11543), (1940, 10591), (2380, 8633), (2492, 8245), (2716, 7565), (3026, 6790), (3115, 6596), (3298, 6230), (3395, 6052)]