20554768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5813}}^1$

素因数の和:5851

約数の個数: 40

約数和(自身を含む): 45418968

約数和(自身を除く): 24864200

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5813, 11626, 23252, 46504, 75569, 93008, 98821, 151138, 197642, 302276, 395284, 604552, 790568, 1209104, 1284673, 1581136, 2569346, 5138692, 10277384, 20554768]

約数ペア:

[(1, 20554768), (2, 10277384), (4, 5138692), (8, 2569346), (13, 1581136), (16, 1284673), (17, 1209104), (26, 790568), (34, 604552), (52, 395284), (68, 302276), (104, 197642), (136, 151138), (208, 98821), (221, 93008), (272, 75569), (442, 46504), (884, 23252), (1768, 11626), (3536, 5813)]