19727708

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{379}}^1$

素因数の和:427

約数の個数: 72

約数和(自身を含む): 46730880

約数和(自身を除く): 27003172

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 169, 182, 286, 308, 338, 364, 379, 572, 676, 758, 1001, 1183, 1516, 1859, 2002, 2366, 2653, 3718, 4004, 4169, 4732, 4927, 5306, 7436, 8338, 9854, 10612, 13013, 16676, 19708, 26026, 29183, 34489, 52052, 54197, 58366, 64051, 68978, 108394, 116732, 128102, 137956, 216788, 256204, 379379, 448357, 704561, 758758, 896714, 1409122, 1517516, 1793428, 2818244, 4931927, 9863854, 19727708]

約数ペア:

[(1, 19727708), (2, 9863854), (4, 4931927), (7, 2818244), (11, 1793428), (13, 1517516), (14, 1409122), (22, 896714), (26, 758758), (28, 704561), (44, 448357), (52, 379379), (77, 256204), (91, 216788), (143, 137956), (154, 128102), (169, 116732), (182, 108394), (286, 68978), (308, 64051), (338, 58366), (364, 54197), (379, 52052), (572, 34489), (676, 29183), (758, 26026), (1001, 19708), (1183, 16676), (1516, 13013), (1859, 10612), (2002, 9854), (2366, 8338), (2653, 7436), (3718, 5306), (4004, 4927), (4169, 4732)]