21436653

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{587}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 34320384

約数和(自身を除く): 12883731

約数列:

[1, 3, 7, 21, 37, 47, 111, 141, 259, 329, 587, 777, 987, 1739, 1761, 4109, 5217, 12173, 12327, 21719, 27589, 36519, 65157, 82767, 152033, 193123, 456099, 579369, 1020793, 3062379, 7145551, 21436653]

約数ペア:

[(1, 21436653), (3, 7145551), (7, 3062379), (21, 1020793), (37, 579369), (47, 456099), (111, 193123), (141, 152033), (259, 82767), (329, 65157), (587, 36519), (777, 27589), (987, 21719), (1739, 12327), (1761, 12173), (4109, 5217)]