20714075

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:152

約数の個数: 36

約数和(自身を含む): 28322592

約数和(自身を除く): 7608517

約数列:

[1, 5, 17, 25, 47, 61, 85, 235, 289, 305, 425, 799, 1037, 1175, 1445, 1525, 2867, 3995, 5185, 7225, 13583, 14335, 17629, 19975, 25925, 48739, 67915, 71675, 88145, 243695, 339575, 440725, 828563, 1218475, 4142815, 20714075]

約数ペア:

[(1, 20714075), (5, 4142815), (17, 1218475), (25, 828563), (47, 440725), (61, 339575), (85, 243695), (235, 88145), (289, 71675), (305, 67915), (425, 48739), (799, 25925), (1037, 19975), (1175, 17629), (1445, 14335), (1525, 13583), (2867, 7225), (3995, 5185)]