21000940208

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{32077}}^1$

素因数の和:32214

約数の個数: 80

約数和(自身を含む): 45106800480

約数和(自身を除く): 24105860272

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 58, 68, 83, 116, 136, 166, 232, 272, 332, 464, 493, 664, 986, 1328, 1411, 1972, 2407, 2822, 3944, 4814, 5644, 7888, 9628, 11288, 19256, 22576, 32077, 38512, 40919, 64154, 81838, 128308, 163676, 256616, 327352, 513232, 545309, 654704, 930233, 1090618, 1860466, 2181236, 2662391, 3720932, 4362472, 5324782, 7441864, 8724944, 10649564, 14883728, 15813961, 21299128, 31627922, 42598256, 45260647, 63255844, 77209339, 90521294, 126511688, 154418678, 181042588, 253023376, 308837356, 362085176, 617674712, 724170352, 1235349424, 1312558763, 2625117526, 5250235052, 10500470104, 21000940208]

約数ペア:

[(1, 21000940208), (2, 10500470104), (4, 5250235052), (8, 2625117526), (16, 1312558763), (17, 1235349424), (29, 724170352), (34, 617674712), (58, 362085176), (68, 308837356), (83, 253023376), (116, 181042588), (136, 154418678), (166, 126511688), (232, 90521294), (272, 77209339), (332, 63255844), (464, 45260647), (493, 42598256), (664, 31627922), (986, 21299128), (1328, 15813961), (1411, 14883728), (1972, 10649564), (2407, 8724944), (2822, 7441864), (3944, 5324782), (4814, 4362472), (5644, 3720932), (7888, 2662391), (9628, 2181236), (11288, 1860466), (19256, 1090618), (22576, 930233), (32077, 654704), (38512, 545309), (40919, 513232), (64154, 327352), (81838, 256616), (128308, 163676)]