1640789960

素因数分解:

$2^3\times 5^1\times {\mathrm{829}}^1\times {\mathrm{49481}}^1$

素因数の和:50321

約数の個数: 32

約数和(自身を含む): 3696305400

約数和(自身を除く): 2055515440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 829, 1658, 3316, 4145, 6632, 8290, 16580, 33160, 49481, 98962, 197924, 247405, 395848, 494810, 989620, 1979240, 41019749, 82039498, 164078996, 205098745, 328157992, 410197490, 820394980, 1640789960]

約数ペア:

[(1, 1640789960), (2, 820394980), (4, 410197490), (5, 328157992), (8, 205098745), (10, 164078996), (20, 82039498), (40, 41019749), (829, 1979240), (1658, 989620), (3316, 494810), (4145, 395848), (6632, 247405), (8290, 197924), (16580, 98962), (33160, 49481)]