21521445

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:202

約数の個数: 64

約数和(自身を含む): 40310784

約数和(自身を除く): 18789339

約数列:

[1, 3, 5, 11, 15, 23, 33, 53, 55, 69, 107, 115, 159, 165, 253, 265, 321, 345, 535, 583, 759, 795, 1177, 1219, 1265, 1605, 1749, 2461, 2915, 3531, 3657, 3795, 5671, 5885, 6095, 7383, 8745, 12305, 13409, 17013, 17655, 18285, 27071, 28355, 36915, 40227, 62381, 67045, 81213, 85065, 130433, 135355, 187143, 201135, 311905, 391299, 406065, 652165, 935715, 1434763, 1956495, 4304289, 7173815, 21521445]

約数ペア:

[(1, 21521445), (3, 7173815), (5, 4304289), (11, 1956495), (15, 1434763), (23, 935715), (33, 652165), (53, 406065), (55, 391299), (69, 311905), (107, 201135), (115, 187143), (159, 135355), (165, 130433), (253, 85065), (265, 81213), (321, 67045), (345, 62381), (535, 40227), (583, 36915), (759, 28355), (795, 27071), (1177, 18285), (1219, 17655), (1265, 17013), (1605, 13409), (1749, 12305), (2461, 8745), (2915, 7383), (3531, 6095), (3657, 5885), (3795, 5671)]