21509732

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{241}}^1\times {\mathrm{421}}^1$

素因数の和:719

約数の個数: 24

約数和(自身を含む): 38602872

約数和(自身を除く): 17093140

約数列:

[1, 2, 4, 53, 106, 212, 241, 421, 482, 842, 964, 1684, 12773, 22313, 25546, 44626, 51092, 89252, 101461, 202922, 405844, 5377433, 10754866, 21509732]

約数ペア:

[(1, 21509732), (2, 10754866), (4, 5377433), (53, 405844), (106, 202922), (212, 101461), (241, 89252), (421, 51092), (482, 44626), (842, 25546), (964, 22313), (1684, 12773)]