19866195

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 17735085

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 47, 93, 101, 135, 141, 155, 235, 279, 303, 423, 465, 505, 705, 837, 909, 1269, 1395, 1457, 1515, 2115, 2727, 3131, 4185, 4371, 4545, 4747, 6345, 7285, 9393, 13113, 13635, 14241, 15655, 21855, 23735, 28179, 39339, 42723, 46965, 65565, 71205, 84537, 128169, 140895, 147157, 196695, 213615, 422685, 441471, 640845, 735785, 1324413, 2207355, 3973239, 6622065, 19866195]

約数ペア:

[(1, 19866195), (3, 6622065), (5, 3973239), (9, 2207355), (15, 1324413), (27, 735785), (31, 640845), (45, 441471), (47, 422685), (93, 213615), (101, 196695), (135, 147157), (141, 140895), (155, 128169), (235, 84537), (279, 71205), (303, 65565), (423, 46965), (465, 42723), (505, 39339), (705, 28179), (837, 23735), (909, 21855), (1269, 15655), (1395, 14241), (1457, 13635), (1515, 13113), (2115, 9393), (2727, 7285), (3131, 6345), (4185, 4747), (4371, 4545)]