21082256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1283}}^1$

素因数の和:1383

約数の個数: 40

約数和(自身を含む): 44580480

約数和(自身を除く): 23498224

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 79, 104, 158, 208, 316, 632, 1027, 1264, 1283, 2054, 2566, 4108, 5132, 8216, 10264, 16432, 16679, 20528, 33358, 66716, 101357, 133432, 202714, 266864, 405428, 810856, 1317641, 1621712, 2635282, 5270564, 10541128, 21082256]

約数ペア:

[(1, 21082256), (2, 10541128), (4, 5270564), (8, 2635282), (13, 1621712), (16, 1317641), (26, 810856), (52, 405428), (79, 266864), (104, 202714), (158, 133432), (208, 101357), (316, 66716), (632, 33358), (1027, 20528), (1264, 16679), (1283, 16432), (2054, 10264), (2566, 8216), (4108, 5132)]