20940075

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7159}}^1$

素因数の和:7188

約数の個数: 36

約数和(自身を含む): 40396720

約数和(自身を除く): 19456645

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7159, 21477, 35795, 64431, 93067, 107385, 178975, 279201, 322155, 465335, 536925, 837603, 1396005, 1610775, 2326675, 4188015, 6980025, 20940075]

約数ペア:

[(1, 20940075), (3, 6980025), (5, 4188015), (9, 2326675), (13, 1610775), (15, 1396005), (25, 837603), (39, 536925), (45, 465335), (65, 322155), (75, 279201), (117, 178975), (195, 107385), (225, 93067), (325, 64431), (585, 35795), (975, 21477), (2925, 7159)]