21109898540

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1\times {\mathrm{277}}^1$

素因数の和:787

約数の個数: 96

約数和(自身を含む): 45412914624

約数和(自身を除く): 24303016084

約数列:

[1, 2, 4, 5, 10, 20, 97, 163, 194, 241, 277, 326, 388, 482, 485, 554, 652, 815, 964, 970, 1108, 1205, 1385, 1630, 1940, 2410, 2770, 3260, 4820, 5540, 15811, 23377, 26869, 31622, 39283, 45151, 46754, 53738, 63244, 66757, 78566, 79055, 90302, 93508, 107476, 116885, 133514, 134345, 157132, 158110, 180604, 196415, 225755, 233770, 267028, 268690, 316220, 333785, 392830, 451510, 467540, 537380, 667570, 785660, 903020, 1335140, 3810451, 4379647, 6475429, 7620902, 8759294, 10881391, 12950858, 15241804, 17518588, 19052255, 21762782, 21898235, 25901716, 32377145, 38104510, 43525564, 43796470, 54406955, 64754290, 76209020, 87592940, 108813910, 129508580, 217627820, 1055494927, 2110989854, 4221979708, 5277474635, 10554949270, 21109898540]

約数ペア:

[(1, 21109898540), (2, 10554949270), (4, 5277474635), (5, 4221979708), (10, 2110989854), (20, 1055494927), (97, 217627820), (163, 129508580), (194, 108813910), (241, 87592940), (277, 76209020), (326, 64754290), (388, 54406955), (482, 43796470), (485, 43525564), (554, 38104510), (652, 32377145), (815, 25901716), (964, 21898235), (970, 21762782), (1108, 19052255), (1205, 17518588), (1385, 15241804), (1630, 12950858), (1940, 10881391), (2410, 8759294), (2770, 7620902), (3260, 6475429), (4820, 4379647), (5540, 3810451), (15811, 1335140), (23377, 903020), (26869, 785660), (31622, 667570), (39283, 537380), (45151, 467540), (46754, 451510), (53738, 392830), (63244, 333785), (66757, 316220), (78566, 268690), (79055, 267028), (90302, 233770), (93508, 225755), (107476, 196415), (116885, 180604), (133514, 158110), (134345, 157132)]