253663880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{1061}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 588772800

約数和(自身を除く): 335108920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 139, 172, 215, 278, 344, 430, 556, 695, 860, 1061, 1112, 1390, 1720, 2122, 2780, 4244, 5305, 5560, 5977, 8488, 10610, 11954, 21220, 23908, 29885, 42440, 45623, 47816, 59770, 91246, 119540, 147479, 182492, 228115, 239080, 294958, 364984, 456230, 589916, 737395, 912460, 1179832, 1474790, 1824920, 2949580, 5899160, 6341597, 12683194, 25366388, 31707985, 50732776, 63415970, 126831940, 253663880]

約数ペア:

[(1, 253663880), (2, 126831940), (4, 63415970), (5, 50732776), (8, 31707985), (10, 25366388), (20, 12683194), (40, 6341597), (43, 5899160), (86, 2949580), (139, 1824920), (172, 1474790), (215, 1179832), (278, 912460), (344, 737395), (430, 589916), (556, 456230), (695, 364984), (860, 294958), (1061, 239080), (1112, 228115), (1390, 182492), (1720, 147479), (2122, 119540), (2780, 91246), (4244, 59770), (5305, 47816), (5560, 45623), (5977, 42440), (8488, 29885), (10610, 23908), (11954, 21220)]