21194028

素因数分解:

$2^2\times 3^3\times {\mathrm{311}}^1\times {\mathrm{631}}^1$

素因数の和:955

約数の個数: 48

約数和(自身を含む): 55211520

約数和(自身を除く): 34017492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 311, 622, 631, 933, 1244, 1262, 1866, 1893, 2524, 2799, 3732, 3786, 5598, 5679, 7572, 8397, 11196, 11358, 16794, 17037, 22716, 33588, 34074, 68148, 196241, 392482, 588723, 784964, 1177446, 1766169, 2354892, 3532338, 5298507, 7064676, 10597014, 21194028]

約数ペア:

[(1, 21194028), (2, 10597014), (3, 7064676), (4, 5298507), (6, 3532338), (9, 2354892), (12, 1766169), (18, 1177446), (27, 784964), (36, 588723), (54, 392482), (108, 196241), (311, 68148), (622, 34074), (631, 33588), (933, 22716), (1244, 17037), (1262, 16794), (1866, 11358), (1893, 11196), (2524, 8397), (2799, 7572), (3732, 5679), (3786, 5598)]