18067880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{479}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 25477720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 41, 46, 82, 92, 115, 164, 184, 205, 230, 328, 410, 460, 479, 820, 920, 943, 958, 1640, 1886, 1916, 2395, 3772, 3832, 4715, 4790, 7544, 9430, 9580, 11017, 18860, 19160, 19639, 22034, 37720, 39278, 44068, 55085, 78556, 88136, 98195, 110170, 157112, 196390, 220340, 392780, 440680, 451697, 785560, 903394, 1806788, 2258485, 3613576, 4516970, 9033940, 18067880]

約数ペア:

[(1, 18067880), (2, 9033940), (4, 4516970), (5, 3613576), (8, 2258485), (10, 1806788), (20, 903394), (23, 785560), (40, 451697), (41, 440680), (46, 392780), (82, 220340), (92, 196390), (115, 157112), (164, 110170), (184, 98195), (205, 88136), (230, 78556), (328, 55085), (410, 44068), (460, 39278), (479, 37720), (820, 22034), (920, 19639), (943, 19160), (958, 18860), (1640, 11017), (1886, 9580), (1916, 9430), (2395, 7544), (3772, 4790), (3832, 4715)]