21012108

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^3\times {\mathrm{797}}^1$

素因数の和:843

約数の個数: 48

約数和(自身を含む): 53178720

約数和(自身を除く): 32166612

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 797, 1014, 1594, 2028, 2197, 2391, 3188, 4394, 4782, 6591, 8788, 9564, 10361, 13182, 20722, 26364, 31083, 41444, 62166, 124332, 134693, 269386, 404079, 538772, 808158, 1616316, 1751009, 3502018, 5253027, 7004036, 10506054, 21012108]

約数ペア:

[(1, 21012108), (2, 10506054), (3, 7004036), (4, 5253027), (6, 3502018), (12, 1751009), (13, 1616316), (26, 808158), (39, 538772), (52, 404079), (78, 269386), (156, 134693), (169, 124332), (338, 62166), (507, 41444), (676, 31083), (797, 26364), (1014, 20722), (1594, 13182), (2028, 10361), (2197, 9564), (2391, 8788), (3188, 6591), (4394, 4782)]