20697950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4549}}^1$

素因数の和:4581

約数の個数: 48

約数和(自身を含む): 47392800

約数和(自身を除く): 26694850

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 130, 175, 182, 325, 350, 455, 650, 910, 2275, 4549, 4550, 9098, 22745, 31843, 45490, 59137, 63686, 113725, 118274, 159215, 227450, 295685, 318430, 413959, 591370, 796075, 827918, 1478425, 1592150, 2069795, 2956850, 4139590, 10348975, 20697950]

約数ペア:

[(1, 20697950), (2, 10348975), (5, 4139590), (7, 2956850), (10, 2069795), (13, 1592150), (14, 1478425), (25, 827918), (26, 796075), (35, 591370), (50, 413959), (65, 318430), (70, 295685), (91, 227450), (130, 159215), (175, 118274), (182, 113725), (325, 63686), (350, 59137), (455, 45490), (650, 31843), (910, 22745), (2275, 9098), (4549, 4550)]