21133456

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:391

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 21185264

約数列:

[1, 2, 4, 8, 16, 47, 94, 157, 179, 188, 314, 358, 376, 628, 716, 752, 1256, 1432, 2512, 2864, 7379, 8413, 14758, 16826, 28103, 29516, 33652, 56206, 59032, 67304, 112412, 118064, 134608, 224824, 449648, 1320841, 2641682, 5283364, 10566728, 21133456]

約数ペア:

[(1, 21133456), (2, 10566728), (4, 5283364), (8, 2641682), (16, 1320841), (47, 449648), (94, 224824), (157, 134608), (179, 118064), (188, 112412), (314, 67304), (358, 59032), (376, 56206), (628, 33652), (716, 29516), (752, 28103), (1256, 16826), (1432, 14758), (2512, 8413), (2864, 7379)]