18657765

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{971}}^1$

素因数の和:1050

約数の個数: 48

約数和(自身を含む): 37604736

約数和(自身を除く): 18946971

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 61, 63, 105, 183, 305, 315, 427, 549, 915, 971, 1281, 2135, 2745, 2913, 3843, 4855, 6405, 6797, 8739, 14565, 19215, 20391, 33985, 43695, 59231, 61173, 101955, 177693, 296155, 305865, 414617, 533079, 888465, 1243851, 2073085, 2665395, 3731553, 6219255, 18657765]

約数ペア:

[(1, 18657765), (3, 6219255), (5, 3731553), (7, 2665395), (9, 2073085), (15, 1243851), (21, 888465), (35, 533079), (45, 414617), (61, 305865), (63, 296155), (105, 177693), (183, 101955), (305, 61173), (315, 59231), (427, 43695), (549, 33985), (915, 20391), (971, 19215), (1281, 14565), (2135, 8739), (2745, 6797), (2913, 6405), (3843, 4855)]