21990531780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5817601}}^1$

素因数の和:5817626

約数の個数: 96

約数和(自身を含む): 78188570880

約数和(自身を除く): 56198039100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5817601, 11635202, 17452803, 23270404, 29088005, 34905606, 40723207, 52358409, 58176010, 69811212, 81446414, 87264015, 104716818, 116352020, 122169621, 157075227, 162892828, 174528030, 203616035, 209433636, 244339242, 261792045, 314150454, 349056060, 366508863, 407232070, 488678484, 523584090, 610848105, 628300908, 733017726, 785376135, 814464140, 1047168180, 1099526589, 1221696210, 1466035452, 1570752270, 1832544315, 2199053178, 2443392420, 3141504540, 3665088630, 4398106356, 5497632945, 7330177260, 10995265890, 21990531780]

約数ペア:

[(1, 21990531780), (2, 10995265890), (3, 7330177260), (4, 5497632945), (5, 4398106356), (6, 3665088630), (7, 3141504540), (9, 2443392420), (10, 2199053178), (12, 1832544315), (14, 1570752270), (15, 1466035452), (18, 1221696210), (20, 1099526589), (21, 1047168180), (27, 814464140), (28, 785376135), (30, 733017726), (35, 628300908), (36, 610848105), (42, 523584090), (45, 488678484), (54, 407232070), (60, 366508863), (63, 349056060), (70, 314150454), (84, 261792045), (90, 244339242), (105, 209433636), (108, 203616035), (126, 174528030), (135, 162892828), (140, 157075227), (180, 122169621), (189, 116352020), (210, 104716818), (252, 87264015), (270, 81446414), (315, 69811212), (378, 58176010), (420, 52358409), (540, 40723207), (630, 34905606), (756, 29088005), (945, 23270404), (1260, 17452803), (1890, 11635202), (3780, 5817601)]