21561225

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{5867}}^1$

素因数の和:5894

約数の個数: 36

約数和(自身を含む): 41475024

約数和(自身を除く): 19913799

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 5867, 17601, 29335, 41069, 88005, 123207, 146675, 205345, 287483, 440025, 616035, 862449, 1026725, 1437415, 3080175, 4312245, 7187075, 21561225]

約数ペア:

[(1, 21561225), (3, 7187075), (5, 4312245), (7, 3080175), (15, 1437415), (21, 1026725), (25, 862449), (35, 616035), (49, 440025), (75, 287483), (105, 205345), (147, 146675), (175, 123207), (245, 88005), (525, 41069), (735, 29335), (1225, 17601), (3675, 5867)]