21651136

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:569

約数の個数: 56

約数和(自身を含む): 47237904

約数和(自身を除く): 25586768

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 53, 64, 104, 106, 208, 212, 416, 424, 491, 689, 832, 848, 982, 1378, 1696, 1964, 2756, 3392, 3928, 5512, 6383, 7856, 11024, 12766, 15712, 22048, 25532, 26023, 31424, 44096, 51064, 52046, 102128, 104092, 204256, 208184, 338299, 408512, 416368, 676598, 832736, 1353196, 1665472, 2706392, 5412784, 10825568, 21651136]

約数ペア:

[(1, 21651136), (2, 10825568), (4, 5412784), (8, 2706392), (13, 1665472), (16, 1353196), (26, 832736), (32, 676598), (52, 416368), (53, 408512), (64, 338299), (104, 208184), (106, 204256), (208, 104092), (212, 102128), (416, 52046), (424, 51064), (491, 44096), (689, 31424), (832, 26023), (848, 25532), (982, 22048), (1378, 15712), (1696, 12766), (1964, 11024), (2756, 7856), (3392, 6383), (3928, 5512)]