520974775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{433}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 726516000

約数和(自身を除く): 205541225

約数列:

[1, 5, 17, 19, 25, 85, 95, 149, 323, 425, 433, 475, 745, 1615, 2165, 2533, 2831, 3725, 7361, 8075, 8227, 10825, 12665, 14155, 36805, 41135, 48127, 63325, 64517, 70775, 139859, 184025, 205675, 240635, 322585, 699295, 1096789, 1203175, 1225823, 1612925, 3496475, 5483945, 6129115, 20838991, 27419725, 30645575, 104194955, 520974775]

約数ペア:

[(1, 520974775), (5, 104194955), (17, 30645575), (19, 27419725), (25, 20838991), (85, 6129115), (95, 5483945), (149, 3496475), (323, 1612925), (425, 1225823), (433, 1203175), (475, 1096789), (745, 699295), (1615, 322585), (2165, 240635), (2533, 205675), (2831, 184025), (3725, 139859), (7361, 70775), (8075, 64517), (8227, 63325), (10825, 48127), (12665, 41135), (14155, 36805)]