20877615

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{827}}^1$

素因数の和:869

約数の個数: 64

約数和(自身を含む): 42923520

約数和(自身を除く): 22045905

約数列:

[1, 3, 5, 9, 11, 15, 17, 27, 33, 45, 51, 55, 85, 99, 135, 153, 165, 187, 255, 297, 459, 495, 561, 765, 827, 935, 1485, 1683, 2295, 2481, 2805, 4135, 5049, 7443, 8415, 9097, 12405, 14059, 22329, 25245, 27291, 37215, 42177, 45485, 70295, 81873, 111645, 126531, 136455, 154649, 210885, 245619, 379593, 409365, 463947, 632655, 773245, 1228095, 1391841, 1897965, 2319735, 4175523, 6959205, 20877615]

約数ペア:

[(1, 20877615), (3, 6959205), (5, 4175523), (9, 2319735), (11, 1897965), (15, 1391841), (17, 1228095), (27, 773245), (33, 632655), (45, 463947), (51, 409365), (55, 379593), (85, 245619), (99, 210885), (135, 154649), (153, 136455), (165, 126531), (187, 111645), (255, 81873), (297, 70295), (459, 45485), (495, 42177), (561, 37215), (765, 27291), (827, 25245), (935, 22329), (1485, 14059), (1683, 12405), (2295, 9097), (2481, 8415), (2805, 7443), (4135, 5049)]