20895992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 24826888

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 53, 68, 104, 106, 136, 212, 221, 223, 424, 442, 446, 689, 884, 892, 901, 1378, 1768, 1784, 1802, 2756, 2899, 3604, 3791, 5512, 5798, 7208, 7582, 11596, 11713, 11819, 15164, 23192, 23426, 23638, 30328, 46852, 47276, 49283, 93704, 94552, 98566, 153647, 197132, 200923, 307294, 394264, 401846, 614588, 803692, 1229176, 1607384, 2611999, 5223998, 10447996, 20895992]

約数ペア:

[(1, 20895992), (2, 10447996), (4, 5223998), (8, 2611999), (13, 1607384), (17, 1229176), (26, 803692), (34, 614588), (52, 401846), (53, 394264), (68, 307294), (104, 200923), (106, 197132), (136, 153647), (212, 98566), (221, 94552), (223, 93704), (424, 49283), (442, 47276), (446, 46852), (689, 30328), (884, 23638), (892, 23426), (901, 23192), (1378, 15164), (1768, 11819), (1784, 11713), (1802, 11596), (2756, 7582), (2899, 7208), (3604, 5798), (3791, 5512)]