209901420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:632

約数の個数: 144

約数和(自身を含む): 668304000

約数和(自身を除く): 458402580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 79, 87, 90, 116, 145, 158, 174, 180, 237, 261, 290, 316, 348, 395, 435, 474, 509, 522, 580, 711, 790, 870, 948, 1018, 1044, 1185, 1305, 1422, 1527, 1580, 1740, 2036, 2291, 2370, 2545, 2610, 2844, 3054, 3555, 4581, 4582, 4740, 5090, 5220, 6108, 6873, 7110, 7635, 9162, 9164, 10180, 11455, 13746, 14220, 14761, 15270, 18324, 20619, 22905, 22910, 27492, 29522, 30540, 34365, 40211, 41238, 44283, 45810, 45820, 59044, 68730, 73805, 80422, 82476, 88566, 91620, 103095, 120633, 132849, 137460, 147610, 160844, 177132, 201055, 206190, 221415, 241266, 265698, 295220, 361899, 402110, 412380, 442830, 482532, 531396, 603165, 664245, 723798, 804220, 885660, 1166119, 1206330, 1328490, 1447596, 1809495, 2332238, 2412660, 2656980, 3498357, 3618990, 4664476, 5830595, 6996714, 7237980, 10495071, 11661190, 13993428, 17491785, 20990142, 23322380, 34983570, 41980284, 52475355, 69967140, 104950710, 209901420]

約数ペア:

[(1, 209901420), (2, 104950710), (3, 69967140), (4, 52475355), (5, 41980284), (6, 34983570), (9, 23322380), (10, 20990142), (12, 17491785), (15, 13993428), (18, 11661190), (20, 10495071), (29, 7237980), (30, 6996714), (36, 5830595), (45, 4664476), (58, 3618990), (60, 3498357), (79, 2656980), (87, 2412660), (90, 2332238), (116, 1809495), (145, 1447596), (158, 1328490), (174, 1206330), (180, 1166119), (237, 885660), (261, 804220), (290, 723798), (316, 664245), (348, 603165), (395, 531396), (435, 482532), (474, 442830), (509, 412380), (522, 402110), (580, 361899), (711, 295220), (790, 265698), (870, 241266), (948, 221415), (1018, 206190), (1044, 201055), (1185, 177132), (1305, 160844), (1422, 147610), (1527, 137460), (1580, 132849), (1740, 120633), (2036, 103095), (2291, 91620), (2370, 88566), (2545, 82476), (2610, 80422), (2844, 73805), (3054, 68730), (3555, 59044), (4581, 45820), (4582, 45810), (4740, 44283), (5090, 41238), (5220, 40211), (6108, 34365), (6873, 30540), (7110, 29522), (7635, 27492), (9162, 22910), (9164, 22905), (10180, 20619), (11455, 18324), (13746, 15270), (14220, 14761)]