21038888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2273}}^1$

素因数の和:2381

約数の個数: 32

約数和(自身を含む): 42978600

約数和(自身を除く): 21939712

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2273, 2314, 4546, 4628, 9092, 9256, 18184, 29549, 59098, 118196, 202297, 236392, 404594, 809188, 1618376, 2629861, 5259722, 10519444, 21038888]

約数ペア:

[(1, 21038888), (2, 10519444), (4, 5259722), (8, 2629861), (13, 1618376), (26, 809188), (52, 404594), (89, 236392), (104, 202297), (178, 118196), (356, 59098), (712, 29549), (1157, 18184), (2273, 9256), (2314, 9092), (4546, 4628)]