20990060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{607}}^1$

素因数の和:655

約数の個数: 96

約数和(自身を含む): 57200640

約数和(自身を除く): 36210580

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 182, 190, 247, 260, 266, 364, 380, 455, 494, 532, 607, 665, 910, 988, 1214, 1235, 1330, 1729, 1820, 2428, 2470, 2660, 3035, 3458, 4249, 4940, 6070, 6916, 7891, 8498, 8645, 11533, 12140, 15782, 16996, 17290, 21245, 23066, 31564, 34580, 39455, 42490, 46132, 55237, 57665, 78910, 80731, 84980, 110474, 115330, 149929, 157820, 161462, 220948, 230660, 276185, 299858, 322924, 403655, 552370, 599716, 749645, 807310, 1049503, 1104740, 1499290, 1614620, 2099006, 2998580, 4198012, 5247515, 10495030, 20990060]

約数ペア:

[(1, 20990060), (2, 10495030), (4, 5247515), (5, 4198012), (7, 2998580), (10, 2099006), (13, 1614620), (14, 1499290), (19, 1104740), (20, 1049503), (26, 807310), (28, 749645), (35, 599716), (38, 552370), (52, 403655), (65, 322924), (70, 299858), (76, 276185), (91, 230660), (95, 220948), (130, 161462), (133, 157820), (140, 149929), (182, 115330), (190, 110474), (247, 84980), (260, 80731), (266, 78910), (364, 57665), (380, 55237), (455, 46132), (494, 42490), (532, 39455), (607, 34580), (665, 31564), (910, 23066), (988, 21245), (1214, 17290), (1235, 16996), (1330, 15782), (1729, 12140), (1820, 11533), (2428, 8645), (2470, 8498), (2660, 7891), (3035, 6916), (3458, 6070), (4249, 4940)]