21801816

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^1\times {\mathrm{15937}}^1$

素因数の和:15968

約数の個数: 48

約数和(自身を含む): 62158200

約数和(自身を除く): 40356384

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 57, 72, 76, 114, 152, 171, 228, 342, 456, 684, 1368, 15937, 31874, 47811, 63748, 95622, 127496, 143433, 191244, 286866, 302803, 382488, 573732, 605606, 908409, 1147464, 1211212, 1816818, 2422424, 2725227, 3633636, 5450454, 7267272, 10900908, 21801816]

約数ペア:

[(1, 21801816), (2, 10900908), (3, 7267272), (4, 5450454), (6, 3633636), (8, 2725227), (9, 2422424), (12, 1816818), (18, 1211212), (19, 1147464), (24, 908409), (36, 605606), (38, 573732), (57, 382488), (72, 302803), (76, 286866), (114, 191244), (152, 143433), (171, 127496), (228, 95622), (342, 63748), (456, 47811), (684, 31874), (1368, 15937)]