7291940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 16040640

約数和(自身を除く): 8748700

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 139, 172, 215, 244, 278, 305, 430, 556, 610, 695, 860, 1220, 1390, 2623, 2780, 5246, 5977, 8479, 10492, 11954, 13115, 16958, 23908, 26230, 29885, 33916, 42395, 52460, 59770, 84790, 119540, 169580, 364597, 729194, 1458388, 1822985, 3645970, 7291940]

約数ペア:

[(1, 7291940), (2, 3645970), (4, 1822985), (5, 1458388), (10, 729194), (20, 364597), (43, 169580), (61, 119540), (86, 84790), (122, 59770), (139, 52460), (172, 42395), (215, 33916), (244, 29885), (278, 26230), (305, 23908), (430, 16958), (556, 13115), (610, 11954), (695, 10492), (860, 8479), (1220, 5977), (1390, 5246), (2623, 2780)]