19665720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:290

約数の個数: 128

約数和(自身を含む): 66528000

約数和(自身を除く): 46862280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 131, 135, 139, 180, 216, 262, 270, 278, 360, 393, 417, 524, 540, 556, 655, 695, 786, 834, 1048, 1080, 1112, 1179, 1251, 1310, 1390, 1572, 1668, 1965, 2085, 2358, 2502, 2620, 2780, 3144, 3336, 3537, 3753, 3930, 4170, 4716, 5004, 5240, 5560, 5895, 6255, 7074, 7506, 7860, 8340, 9432, 10008, 11790, 12510, 14148, 15012, 15720, 16680, 17685, 18209, 18765, 23580, 25020, 28296, 30024, 35370, 36418, 37530, 47160, 50040, 54627, 70740, 72836, 75060, 91045, 109254, 141480, 145672, 150120, 163881, 182090, 218508, 273135, 327762, 364180, 437016, 491643, 546270, 655524, 728360, 819405, 983286, 1092540, 1311048, 1638810, 1966572, 2185080, 2458215, 3277620, 3933144, 4916430, 6555240, 9832860, 19665720]

約数ペア:

[(1, 19665720), (2, 9832860), (3, 6555240), (4, 4916430), (5, 3933144), (6, 3277620), (8, 2458215), (9, 2185080), (10, 1966572), (12, 1638810), (15, 1311048), (18, 1092540), (20, 983286), (24, 819405), (27, 728360), (30, 655524), (36, 546270), (40, 491643), (45, 437016), (54, 364180), (60, 327762), (72, 273135), (90, 218508), (108, 182090), (120, 163881), (131, 150120), (135, 145672), (139, 141480), (180, 109254), (216, 91045), (262, 75060), (270, 72836), (278, 70740), (360, 54627), (393, 50040), (417, 47160), (524, 37530), (540, 36418), (556, 35370), (655, 30024), (695, 28296), (786, 25020), (834, 23580), (1048, 18765), (1080, 18209), (1112, 17685), (1179, 16680), (1251, 15720), (1310, 15012), (1390, 14148), (1572, 12510), (1668, 11790), (1965, 10008), (2085, 9432), (2358, 8340), (2502, 7860), (2620, 7506), (2780, 7074), (3144, 6255), (3336, 5895), (3537, 5560), (3753, 5240), (3930, 5004), (4170, 4716)]