21554680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3347}}^1$

素因数の和:3388

約数の個数: 64

約数和(自身を含む): 57853440

約数和(自身を除く): 36298760

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, 3347, 6440, 6694, 13388, 16735, 23429, 26776, 33470, 46858, 66940, 76981, 93716, 117145, 133880, 153962, 187432, 234290, 307924, 384905, 468580, 538867, 615848, 769810, 937160, 1077734, 1539620, 2155468, 2694335, 3079240, 4310936, 5388670, 10777340, 21554680]

約数ペア:

[(1, 21554680), (2, 10777340), (4, 5388670), (5, 4310936), (7, 3079240), (8, 2694335), (10, 2155468), (14, 1539620), (20, 1077734), (23, 937160), (28, 769810), (35, 615848), (40, 538867), (46, 468580), (56, 384905), (70, 307924), (92, 234290), (115, 187432), (140, 153962), (161, 133880), (184, 117145), (230, 93716), (280, 76981), (322, 66940), (460, 46858), (644, 33470), (805, 26776), (920, 23429), (1288, 16735), (1610, 13388), (3220, 6694), (3347, 6440)]