21399516

素因数分解:

$2^2\times 3^2\times {\mathrm{89}}^1\times {\mathrm{6679}}^1$

素因数の和:6778

約数の個数: 36

約数和(自身を含む): 54709200

約数和(自身を除く): 33309684

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 89, 178, 267, 356, 534, 801, 1068, 1602, 3204, 6679, 13358, 20037, 26716, 40074, 60111, 80148, 120222, 240444, 594431, 1188862, 1783293, 2377724, 3566586, 5349879, 7133172, 10699758, 21399516]

約数ペア:

[(1, 21399516), (2, 10699758), (3, 7133172), (4, 5349879), (6, 3566586), (9, 2377724), (12, 1783293), (18, 1188862), (36, 594431), (89, 240444), (178, 120222), (267, 80148), (356, 60111), (534, 40074), (801, 26716), (1068, 20037), (1602, 13358), (3204, 6679)]