21810195

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{773}}^1$

素因数の和:817

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 22772205

約数列:

[1, 3, 5, 9, 11, 15, 19, 27, 33, 45, 55, 57, 95, 99, 135, 165, 171, 209, 285, 297, 495, 513, 627, 773, 855, 1045, 1485, 1881, 2319, 2565, 3135, 3865, 5643, 6957, 8503, 9405, 11595, 14687, 20871, 25509, 28215, 34785, 42515, 44061, 73435, 76527, 104355, 127545, 132183, 161557, 220305, 229581, 382635, 396549, 484671, 660915, 807785, 1147905, 1454013, 1982745, 2423355, 4362039, 7270065, 21810195]

約数ペア:

[(1, 21810195), (3, 7270065), (5, 4362039), (9, 2423355), (11, 1982745), (15, 1454013), (19, 1147905), (27, 807785), (33, 660915), (45, 484671), (55, 396549), (57, 382635), (95, 229581), (99, 220305), (135, 161557), (165, 132183), (171, 127545), (209, 104355), (285, 76527), (297, 73435), (495, 44061), (513, 42515), (627, 34785), (773, 28215), (855, 25509), (1045, 20871), (1485, 14687), (1881, 11595), (2319, 9405), (2565, 8503), (3135, 6957), (3865, 5643)]