20128220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 55157760

約数和(自身を除く): 35029540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 23, 28, 35, 38, 46, 47, 49, 70, 76, 92, 94, 95, 98, 115, 133, 140, 161, 188, 190, 196, 230, 235, 245, 266, 322, 329, 380, 437, 460, 470, 490, 532, 644, 658, 665, 805, 874, 893, 931, 940, 980, 1081, 1127, 1316, 1330, 1610, 1645, 1748, 1786, 1862, 2162, 2185, 2254, 2303, 2660, 3059, 3220, 3290, 3572, 3724, 4324, 4370, 4465, 4508, 4606, 4655, 5405, 5635, 6118, 6251, 6580, 7567, 8740, 8930, 9212, 9310, 10810, 11270, 11515, 12236, 12502, 15134, 15295, 17860, 18620, 20539, 21413, 21620, 22540, 23030, 25004, 30268, 30590, 31255, 37835, 41078, 42826, 43757, 46060, 52969, 61180, 62510, 75670, 82156, 85652, 87514, 102695, 105938, 107065, 125020, 143773, 151340, 175028, 205390, 211876, 214130, 218785, 264845, 287546, 410780, 428260, 437570, 529690, 575092, 718865, 875140, 1006411, 1059380, 1437730, 2012822, 2875460, 4025644, 5032055, 10064110, 20128220]

約数ペア:

[(1, 20128220), (2, 10064110), (4, 5032055), (5, 4025644), (7, 2875460), (10, 2012822), (14, 1437730), (19, 1059380), (20, 1006411), (23, 875140), (28, 718865), (35, 575092), (38, 529690), (46, 437570), (47, 428260), (49, 410780), (70, 287546), (76, 264845), (92, 218785), (94, 214130), (95, 211876), (98, 205390), (115, 175028), (133, 151340), (140, 143773), (161, 125020), (188, 107065), (190, 105938), (196, 102695), (230, 87514), (235, 85652), (245, 82156), (266, 75670), (322, 62510), (329, 61180), (380, 52969), (437, 46060), (460, 43757), (470, 42826), (490, 41078), (532, 37835), (644, 31255), (658, 30590), (665, 30268), (805, 25004), (874, 23030), (893, 22540), (931, 21620), (940, 21413), (980, 20539), (1081, 18620), (1127, 17860), (1316, 15295), (1330, 15134), (1610, 12502), (1645, 12236), (1748, 11515), (1786, 11270), (1862, 10810), (2162, 9310), (2185, 9212), (2254, 8930), (2303, 8740), (2660, 7567), (3059, 6580), (3220, 6251), (3290, 6118), (3572, 5635), (3724, 5405), (4324, 4655), (4370, 4606), (4465, 4508)]