21498672

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:418

約数の個数: 80

約数和(自身を含む): 60496128

約数和(自身を除く): 38997456

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 131, 156, 208, 262, 263, 312, 393, 524, 526, 624, 786, 789, 1048, 1052, 1572, 1578, 1703, 2096, 2104, 3144, 3156, 3406, 3419, 4208, 5109, 6288, 6312, 6812, 6838, 10218, 10257, 12624, 13624, 13676, 20436, 20514, 27248, 27352, 34453, 40872, 41028, 54704, 68906, 81744, 82056, 103359, 137812, 164112, 206718, 275624, 413436, 447889, 551248, 826872, 895778, 1343667, 1653744, 1791556, 2687334, 3583112, 5374668, 7166224, 10749336, 21498672]

約数ペア:

[(1, 21498672), (2, 10749336), (3, 7166224), (4, 5374668), (6, 3583112), (8, 2687334), (12, 1791556), (13, 1653744), (16, 1343667), (24, 895778), (26, 826872), (39, 551248), (48, 447889), (52, 413436), (78, 275624), (104, 206718), (131, 164112), (156, 137812), (208, 103359), (262, 82056), (263, 81744), (312, 68906), (393, 54704), (524, 41028), (526, 40872), (624, 34453), (786, 27352), (789, 27248), (1048, 20514), (1052, 20436), (1572, 13676), (1578, 13624), (1703, 12624), (2096, 10257), (2104, 10218), (3144, 6838), (3156, 6812), (3406, 6312), (3419, 6288), (4208, 5109)]