20786912

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{191}}^1$

素因数の和:399

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22758688

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 179, 191, 304, 358, 382, 608, 716, 764, 1432, 1528, 2864, 3056, 3401, 3629, 5728, 6112, 6802, 7258, 13604, 14516, 27208, 29032, 34189, 54416, 58064, 68378, 108832, 116128, 136756, 273512, 547024, 649591, 1094048, 1299182, 2598364, 5196728, 10393456, 20786912]

約数ペア:

[(1, 20786912), (2, 10393456), (4, 5196728), (8, 2598364), (16, 1299182), (19, 1094048), (32, 649591), (38, 547024), (76, 273512), (152, 136756), (179, 116128), (191, 108832), (304, 68378), (358, 58064), (382, 54416), (608, 34189), (716, 29032), (764, 27208), (1432, 14516), (1528, 13604), (2864, 7258), (3056, 6802), (3401, 6112), (3629, 5728)]