128445520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{661}}^1$

素因数の和:1028

約数の個数: 80

約数和(自身を含む): 342799488

約数和(自身を除く): 214353968

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 347, 560, 661, 694, 1322, 1388, 1735, 2429, 2644, 2776, 3305, 3470, 4627, 4858, 5288, 5552, 6610, 6940, 9254, 9716, 10576, 12145, 13220, 13880, 18508, 19432, 23135, 24290, 26440, 27760, 37016, 38864, 46270, 48580, 52880, 74032, 92540, 97160, 185080, 194320, 229367, 370160, 458734, 917468, 1146835, 1605569, 1834936, 2293670, 3211138, 3669872, 4587340, 6422276, 8027845, 9174680, 12844552, 16055690, 18349360, 25689104, 32111380, 64222760, 128445520]

約数ペア:

[(1, 128445520), (2, 64222760), (4, 32111380), (5, 25689104), (7, 18349360), (8, 16055690), (10, 12844552), (14, 9174680), (16, 8027845), (20, 6422276), (28, 4587340), (35, 3669872), (40, 3211138), (56, 2293670), (70, 1834936), (80, 1605569), (112, 1146835), (140, 917468), (280, 458734), (347, 370160), (560, 229367), (661, 194320), (694, 185080), (1322, 97160), (1388, 92540), (1735, 74032), (2429, 52880), (2644, 48580), (2776, 46270), (3305, 38864), (3470, 37016), (4627, 27760), (4858, 26440), (5288, 24290), (5552, 23135), (6610, 19432), (6940, 18508), (9254, 13880), (9716, 13220), (10576, 12145)]