20743240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3221}}^1$

素因数の和:3262

約数の個数: 64

約数和(自身を含む): 55676160

約数和(自身を除く): 34932920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 3221, 6440, 6442, 12884, 16105, 22547, 25768, 32210, 45094, 64420, 74083, 90188, 112735, 128840, 148166, 180376, 225470, 296332, 370415, 450940, 518581, 592664, 740830, 901880, 1037162, 1481660, 2074324, 2592905, 2963320, 4148648, 5185810, 10371620, 20743240]

約数ペア:

[(1, 20743240), (2, 10371620), (4, 5185810), (5, 4148648), (7, 2963320), (8, 2592905), (10, 2074324), (14, 1481660), (20, 1037162), (23, 901880), (28, 740830), (35, 592664), (40, 518581), (46, 450940), (56, 370415), (70, 296332), (92, 225470), (115, 180376), (140, 148166), (161, 128840), (184, 112735), (230, 90188), (280, 74083), (322, 64420), (460, 45094), (644, 32210), (805, 25768), (920, 22547), (1288, 16105), (1610, 12884), (3220, 6442), (3221, 6440)]