21000480774

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2131}}^1\times {\mathrm{18049}}^1$

素因数の和:20205

約数の個数: 64

約数和(自身を含む): 51720614400

約数和(自身を除く): 30720133626

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 182, 273, 546, 2131, 4262, 6393, 12786, 14917, 18049, 27703, 29834, 36098, 44751, 54147, 55406, 83109, 89502, 108294, 126343, 166218, 193921, 234637, 252686, 379029, 387842, 469274, 581763, 703911, 758058, 1163526, 1407822, 1642459, 3284918, 4927377, 9854754, 38462419, 76924838, 115387257, 230774514, 269236933, 500011447, 538473866, 807710799, 1000022894, 1500034341, 1615421598, 3000068682, 3500080129, 7000160258, 10500240387, 21000480774]

約数ペア:

[(1, 21000480774), (2, 10500240387), (3, 7000160258), (6, 3500080129), (7, 3000068682), (13, 1615421598), (14, 1500034341), (21, 1000022894), (26, 807710799), (39, 538473866), (42, 500011447), (78, 269236933), (91, 230774514), (182, 115387257), (273, 76924838), (546, 38462419), (2131, 9854754), (4262, 4927377), (6393, 3284918), (12786, 1642459), (14917, 1407822), (18049, 1163526), (27703, 758058), (29834, 703911), (36098, 581763), (44751, 469274), (54147, 387842), (55406, 379029), (83109, 252686), (89502, 234637), (108294, 193921), (126343, 166218)]