128321960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246773}}^1$

素因数の和:246797

約数の個数: 32

約数和(自身を含む): 310935240

約数和(自身を除く): 182613280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 246773, 493546, 987092, 1233865, 1974184, 2467730, 3208049, 4935460, 6416098, 9870920, 12832196, 16040245, 25664392, 32080490, 64160980, 128321960]

約数ペア:

[(1, 128321960), (2, 64160980), (4, 32080490), (5, 25664392), (8, 16040245), (10, 12832196), (13, 9870920), (20, 6416098), (26, 4935460), (40, 3208049), (52, 2467730), (65, 1974184), (104, 1233865), (130, 987092), (260, 493546), (520, 246773)]