19928706

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 47609856

約数和(自身を除く): 27681150

約数列:

[1, 2, 3, 6, 7, 14, 21, 41, 42, 71, 82, 123, 142, 163, 213, 246, 287, 326, 426, 489, 497, 574, 861, 978, 994, 1141, 1491, 1722, 2282, 2911, 2982, 3423, 5822, 6683, 6846, 8733, 11573, 13366, 17466, 20049, 20377, 23146, 34719, 40098, 40754, 46781, 61131, 69438, 81011, 93562, 122262, 140343, 162022, 243033, 280686, 474493, 486066, 948986, 1423479, 2846958, 3321451, 6642902, 9964353, 19928706]

約数ペア:

[(1, 19928706), (2, 9964353), (3, 6642902), (6, 3321451), (7, 2846958), (14, 1423479), (21, 948986), (41, 486066), (42, 474493), (71, 280686), (82, 243033), (123, 162022), (142, 140343), (163, 122262), (213, 93562), (246, 81011), (287, 69438), (326, 61131), (426, 46781), (489, 40754), (497, 40098), (574, 34719), (861, 23146), (978, 20377), (994, 20049), (1141, 17466), (1491, 13366), (1722, 11573), (2282, 8733), (2911, 6846), (2982, 6683), (3423, 5822)]