19581516

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 51577344

約数和(自身を除く): 31995828

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 71, 94, 141, 142, 163, 188, 213, 282, 284, 326, 423, 426, 489, 564, 639, 652, 846, 852, 978, 1278, 1467, 1692, 1956, 2556, 2934, 3337, 5868, 6674, 7661, 10011, 11573, 13348, 15322, 20022, 22983, 23146, 30033, 30644, 34719, 40044, 45966, 46292, 60066, 68949, 69438, 91932, 104157, 120132, 137898, 138876, 208314, 275796, 416628, 543931, 1087862, 1631793, 2175724, 3263586, 4895379, 6527172, 9790758, 19581516]

約数ペア:

[(1, 19581516), (2, 9790758), (3, 6527172), (4, 4895379), (6, 3263586), (9, 2175724), (12, 1631793), (18, 1087862), (36, 543931), (47, 416628), (71, 275796), (94, 208314), (141, 138876), (142, 137898), (163, 120132), (188, 104157), (213, 91932), (282, 69438), (284, 68949), (326, 60066), (423, 46292), (426, 45966), (489, 40044), (564, 34719), (639, 30644), (652, 30033), (846, 23146), (852, 22983), (978, 20022), (1278, 15322), (1467, 13348), (1692, 11573), (1956, 10011), (2556, 7661), (2934, 6674), (3337, 5868)]