21815196

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:411

約数の個数: 72

約数和(自身を含む): 57060864

約数和(自身を除く): 35245668

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 156, 169, 186, 338, 347, 372, 403, 507, 676, 694, 806, 1014, 1041, 1209, 1388, 1612, 2028, 2082, 2418, 4164, 4511, 4836, 5239, 9022, 10478, 10757, 13533, 15717, 18044, 20956, 21514, 27066, 31434, 32271, 43028, 54132, 58643, 62868, 64542, 117286, 129084, 139841, 175929, 234572, 279682, 351858, 419523, 559364, 703716, 839046, 1678092, 1817933, 3635866, 5453799, 7271732, 10907598, 21815196]

約数ペア:

[(1, 21815196), (2, 10907598), (3, 7271732), (4, 5453799), (6, 3635866), (12, 1817933), (13, 1678092), (26, 839046), (31, 703716), (39, 559364), (52, 419523), (62, 351858), (78, 279682), (93, 234572), (124, 175929), (156, 139841), (169, 129084), (186, 117286), (338, 64542), (347, 62868), (372, 58643), (403, 54132), (507, 43028), (676, 32271), (694, 31434), (806, 27066), (1014, 21514), (1041, 20956), (1209, 18044), (1388, 15717), (1612, 13533), (2028, 10757), (2082, 10478), (2418, 9022), (4164, 5239), (4511, 4836)]