21043988

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{797}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 24001516

約数列:

[1, 2, 4, 7, 14, 23, 28, 41, 46, 82, 92, 161, 164, 287, 322, 574, 644, 797, 943, 1148, 1594, 1886, 3188, 3772, 5579, 6601, 11158, 13202, 18331, 22316, 26404, 32677, 36662, 65354, 73324, 128317, 130708, 228739, 256634, 457478, 513268, 751571, 914956, 1503142, 3006284, 5260997, 10521994, 21043988]

約数ペア:

[(1, 21043988), (2, 10521994), (4, 5260997), (7, 3006284), (14, 1503142), (23, 914956), (28, 751571), (41, 513268), (46, 457478), (82, 256634), (92, 228739), (161, 130708), (164, 128317), (287, 73324), (322, 65354), (574, 36662), (644, 32677), (797, 26404), (943, 22316), (1148, 18331), (1594, 13202), (1886, 11158), (3188, 6601), (3772, 5579)]