21869276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 48145104

約数和(自身を除く): 26275828

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 169, 173, 187, 221, 286, 338, 346, 374, 442, 572, 676, 692, 748, 884, 1859, 1903, 2249, 2431, 2873, 2941, 3718, 3806, 4498, 4862, 5746, 5882, 7436, 7612, 8996, 9724, 11492, 11764, 24739, 29237, 31603, 32351, 38233, 49478, 58474, 63206, 64702, 76466, 98956, 116948, 126412, 129404, 152932, 321607, 420563, 497029, 643214, 841126, 994058, 1286428, 1682252, 1988116, 5467319, 10934638, 21869276]

約数ペア:

[(1, 21869276), (2, 10934638), (4, 5467319), (11, 1988116), (13, 1682252), (17, 1286428), (22, 994058), (26, 841126), (34, 643214), (44, 497029), (52, 420563), (68, 321607), (143, 152932), (169, 129404), (173, 126412), (187, 116948), (221, 98956), (286, 76466), (338, 64702), (346, 63206), (374, 58474), (442, 49478), (572, 38233), (676, 32351), (692, 31603), (748, 29237), (884, 24739), (1859, 11764), (1903, 11492), (2249, 9724), (2431, 8996), (2873, 7612), (2941, 7436), (3718, 5882), (3806, 5746), (4498, 4862)]