21376740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:698

約数の個数: 144

約数和(自身を含む): 76071744

約数和(自身を除く): 54695004

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 60, 66, 70, 77, 84, 98, 105, 110, 132, 140, 147, 154, 165, 196, 210, 220, 231, 245, 294, 308, 330, 385, 420, 462, 490, 539, 588, 660, 661, 735, 770, 924, 980, 1078, 1155, 1322, 1470, 1540, 1617, 1983, 2156, 2310, 2644, 2695, 2940, 3234, 3305, 3966, 4620, 4627, 5390, 6468, 6610, 7271, 7932, 8085, 9254, 9915, 10780, 13220, 13881, 14542, 16170, 18508, 19830, 21813, 23135, 27762, 29084, 32340, 32389, 36355, 39660, 43626, 46270, 50897, 55524, 64778, 69405, 72710, 87252, 92540, 97167, 101794, 109065, 129556, 138810, 145420, 152691, 161945, 194334, 203588, 218130, 254485, 277620, 305382, 323890, 356279, 388668, 436260, 485835, 508970, 610764, 647780, 712558, 763455, 971670, 1017940, 1068837, 1425116, 1526910, 1781395, 1943340, 2137674, 3053820, 3562790, 4275348, 5344185, 7125580, 10688370, 21376740]

約数ペア:

[(1, 21376740), (2, 10688370), (3, 7125580), (4, 5344185), (5, 4275348), (6, 3562790), (7, 3053820), (10, 2137674), (11, 1943340), (12, 1781395), (14, 1526910), (15, 1425116), (20, 1068837), (21, 1017940), (22, 971670), (28, 763455), (30, 712558), (33, 647780), (35, 610764), (42, 508970), (44, 485835), (49, 436260), (55, 388668), (60, 356279), (66, 323890), (70, 305382), (77, 277620), (84, 254485), (98, 218130), (105, 203588), (110, 194334), (132, 161945), (140, 152691), (147, 145420), (154, 138810), (165, 129556), (196, 109065), (210, 101794), (220, 97167), (231, 92540), (245, 87252), (294, 72710), (308, 69405), (330, 64778), (385, 55524), (420, 50897), (462, 46270), (490, 43626), (539, 39660), (588, 36355), (660, 32389), (661, 32340), (735, 29084), (770, 27762), (924, 23135), (980, 21813), (1078, 19830), (1155, 18508), (1322, 16170), (1470, 14542), (1540, 13881), (1617, 13220), (1983, 10780), (2156, 9915), (2310, 9254), (2644, 8085), (2695, 7932), (2940, 7271), (3234, 6610), (3305, 6468), (3966, 5390), (4620, 4627)]