21164860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55697}}^1$

素因数の和:55725

約数の個数: 24

約数和(自身を含む): 46786320

約数和(自身を除く): 25621460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55697, 111394, 222788, 278485, 556970, 1058243, 1113940, 2116486, 4232972, 5291215, 10582430, 21164860]

約数ペア:

[(1, 21164860), (2, 10582430), (4, 5291215), (5, 4232972), (10, 2116486), (19, 1113940), (20, 1058243), (38, 556970), (76, 278485), (95, 222788), (190, 111394), (380, 55697)]