445494140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1052

約数の個数: 144

約数和(自身を含む): 1219921920

約数和(自身を除く): 774427780

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, 169, 182, 190, 247, 260, 266, 338, 364, 380, 455, 494, 532, 665, 676, 845, 910, 988, 991, 1183, 1235, 1330, 1690, 1729, 1820, 1982, 2366, 2470, 2660, 3211, 3380, 3458, 3964, 4732, 4940, 4955, 5915, 6422, 6916, 6937, 8645, 9910, 11830, 12844, 12883, 13874, 16055, 17290, 18829, 19820, 22477, 23660, 25766, 27748, 32110, 34580, 34685, 37658, 44954, 51532, 64220, 64415, 69370, 75316, 89908, 90181, 94145, 112385, 128830, 131803, 138740, 167479, 180362, 188290, 224770, 244777, 257660, 263606, 334958, 360724, 376580, 449540, 450905, 489554, 527212, 659015, 669916, 837395, 901810, 979108, 1172353, 1223885, 1318030, 1674790, 1713439, 1803620, 2344706, 2447770, 2636060, 3182101, 3349580, 3426878, 4689412, 4895540, 5861765, 6364202, 6853756, 8567195, 11723530, 12728404, 15910505, 17134390, 22274707, 23447060, 31821010, 34268780, 44549414, 63642020, 89098828, 111373535, 222747070, 445494140]

約数ペア:

[(1, 445494140), (2, 222747070), (4, 111373535), (5, 89098828), (7, 63642020), (10, 44549414), (13, 34268780), (14, 31821010), (19, 23447060), (20, 22274707), (26, 17134390), (28, 15910505), (35, 12728404), (38, 11723530), (52, 8567195), (65, 6853756), (70, 6364202), (76, 5861765), (91, 4895540), (95, 4689412), (130, 3426878), (133, 3349580), (140, 3182101), (169, 2636060), (182, 2447770), (190, 2344706), (247, 1803620), (260, 1713439), (266, 1674790), (338, 1318030), (364, 1223885), (380, 1172353), (455, 979108), (494, 901810), (532, 837395), (665, 669916), (676, 659015), (845, 527212), (910, 489554), (988, 450905), (991, 449540), (1183, 376580), (1235, 360724), (1330, 334958), (1690, 263606), (1729, 257660), (1820, 244777), (1982, 224770), (2366, 188290), (2470, 180362), (2660, 167479), (3211, 138740), (3380, 131803), (3458, 128830), (3964, 112385), (4732, 94145), (4940, 90181), (4955, 89908), (5915, 75316), (6422, 69370), (6916, 64415), (6937, 64220), (8645, 51532), (9910, 44954), (11830, 37658), (12844, 34685), (12883, 34580), (13874, 32110), (16055, 27748), (17290, 25766), (18829, 23660), (19820, 22477)]