21000756040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{13441}}^1$

素因数の和:13583

約数の個数: 128

約数和(自身を含む): 53307745920

約数和(自身を除く): 32306989880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 53, 55, 67, 88, 106, 110, 134, 212, 220, 265, 268, 335, 424, 440, 530, 536, 583, 670, 737, 1060, 1166, 1340, 1474, 2120, 2332, 2680, 2915, 2948, 3551, 3685, 4664, 5830, 5896, 7102, 7370, 11660, 13441, 14204, 14740, 17755, 23320, 26882, 28408, 29480, 35510, 39061, 53764, 67205, 71020, 78122, 107528, 134410, 142040, 147851, 156244, 195305, 268820, 295702, 312488, 390610, 537640, 591404, 712373, 739255, 781220, 900547, 1182808, 1424746, 1478510, 1562440, 1801094, 2849492, 2957020, 3561865, 3602188, 4502735, 5698984, 5914040, 7123730, 7204376, 7836103, 9005470, 9906017, 14247460, 15672206, 18010940, 19812034, 28494920, 31344412, 36021880, 39180515, 39624068, 47728991, 49530085, 62688824, 78361030, 79248136, 95457982, 99060170, 156722060, 190915964, 198120340, 238644955, 313444120, 381831928, 396240680, 477289910, 525018901, 954579820, 1050037802, 1909159640, 2100075604, 2625094505, 4200151208, 5250189010, 10500378020, 21000756040]

約数ペア:

[(1, 21000756040), (2, 10500378020), (4, 5250189010), (5, 4200151208), (8, 2625094505), (10, 2100075604), (11, 1909159640), (20, 1050037802), (22, 954579820), (40, 525018901), (44, 477289910), (53, 396240680), (55, 381831928), (67, 313444120), (88, 238644955), (106, 198120340), (110, 190915964), (134, 156722060), (212, 99060170), (220, 95457982), (265, 79248136), (268, 78361030), (335, 62688824), (424, 49530085), (440, 47728991), (530, 39624068), (536, 39180515), (583, 36021880), (670, 31344412), (737, 28494920), (1060, 19812034), (1166, 18010940), (1340, 15672206), (1474, 14247460), (2120, 9906017), (2332, 9005470), (2680, 7836103), (2915, 7204376), (2948, 7123730), (3551, 5914040), (3685, 5698984), (4664, 4502735), (5830, 3602188), (5896, 3561865), (7102, 2957020), (7370, 2849492), (11660, 1801094), (13441, 1562440), (14204, 1478510), (14740, 1424746), (17755, 1182808), (23320, 900547), (26882, 781220), (28408, 739255), (29480, 712373), (35510, 591404), (39061, 537640), (53764, 390610), (67205, 312488), (71020, 295702), (78122, 268820), (107528, 195305), (134410, 156244), (142040, 147851)]