1636640

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 3959928

約数和(自身を除く): 2323288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 193, 212, 265, 386, 424, 530, 772, 848, 965, 1060, 1544, 1696, 1930, 2120, 3088, 3860, 4240, 6176, 7720, 8480, 10229, 15440, 20458, 30880, 40916, 51145, 81832, 102290, 163664, 204580, 327328, 409160, 818320, 1636640]

約数ペア:

[(1, 1636640), (2, 818320), (4, 409160), (5, 327328), (8, 204580), (10, 163664), (16, 102290), (20, 81832), (32, 51145), (40, 40916), (53, 30880), (80, 20458), (106, 15440), (160, 10229), (193, 8480), (212, 7720), (265, 6176), (386, 4240), (424, 3860), (530, 3088), (772, 2120), (848, 1930), (965, 1696), (1060, 1544)]