20673975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{743}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 39854592

約数和(自身を除く): 19180617

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 53, 75, 105, 159, 175, 265, 371, 525, 743, 795, 1113, 1325, 1855, 2229, 3715, 3975, 5201, 5565, 9275, 11145, 15603, 18575, 26005, 27825, 39379, 55725, 78015, 118137, 130025, 196895, 275653, 390075, 590685, 826959, 984475, 1378265, 2953425, 4134795, 6891325, 20673975]

約数ペア:

[(1, 20673975), (3, 6891325), (5, 4134795), (7, 2953425), (15, 1378265), (21, 984475), (25, 826959), (35, 590685), (53, 390075), (75, 275653), (105, 196895), (159, 130025), (175, 118137), (265, 78015), (371, 55725), (525, 39379), (743, 27825), (795, 26005), (1113, 18575), (1325, 15603), (1855, 11145), (2229, 9275), (3715, 5565), (3975, 5201)]