21404965.000000000

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{228829}}^1$

素因数の和:228858

約数の個数: 36

約数和(自身を含む): 416470600

約数和(自身を除く): 259951564

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684, 228829, 457658, 686487, 915316, 1372974, 2059461, 2745948, 4118922, 4347751, 8237844, 8695502, 13043253, 17391004, 26086506, 39129759, 52173012, 78259518, 156519036]

約数ペア:

[(1, 156519036), (2, 78259518), (3, 52173012), (4, 39129759), (6, 26086506), (9, 17391004), (12, 13043253), (18, 8695502), (19, 8237844), (36, 4347751), (38, 4118922), (57, 2745948), (76, 2059461), (114, 1372974), (171, 915316), (228, 686487), (342, 457658), (684, 228829)]