20840956080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12405331}}^1$

素因数の和:12405354

約数の個数: 80

約数和(自身を含む): 73836536064

約数和(自身を除く): 52995579984

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12405331, 24810662, 37215993, 49621324, 62026655, 74431986, 86837317, 99242648, 124053310, 148863972, 173674634, 186079965, 198485296, 248106620, 260511951, 297727944, 347349268, 372159930, 434186585, 496213240, 521023902, 595455888, 694698536, 744319860, 868373170, 992426480, 1042047804, 1302559755, 1389397072, 1488639720, 1736746340, 2084095608, 2605119510, 2977279440, 3473492680, 4168191216, 5210239020, 6946985360, 10420478040, 20840956080]

約数ペア:

[(1, 20840956080), (2, 10420478040), (3, 6946985360), (4, 5210239020), (5, 4168191216), (6, 3473492680), (7, 2977279440), (8, 2605119510), (10, 2084095608), (12, 1736746340), (14, 1488639720), (15, 1389397072), (16, 1302559755), (20, 1042047804), (21, 992426480), (24, 868373170), (28, 744319860), (30, 694698536), (35, 595455888), (40, 521023902), (42, 496213240), (48, 434186585), (56, 372159930), (60, 347349268), (70, 297727944), (80, 260511951), (84, 248106620), (105, 198485296), (112, 186079965), (120, 173674634), (140, 148863972), (168, 124053310), (210, 99242648), (240, 86837317), (280, 74431986), (336, 62026655), (420, 49621324), (560, 37215993), (840, 24810662), (1680, 12405331)]