161312680

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{16067}}^1$

素因数の和:16329

約数の個数: 32

約数和(自身を含む): 364422240

約数和(自身を除く): 203109560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 16067, 32134, 64268, 80335, 128536, 160670, 321340, 642680, 4032817, 8065634, 16131268, 20164085, 32262536, 40328170, 80656340, 161312680]

約数ペア:

[(1, 161312680), (2, 80656340), (4, 40328170), (5, 32262536), (8, 20164085), (10, 16131268), (20, 8065634), (40, 4032817), (251, 642680), (502, 321340), (1004, 160670), (1255, 128536), (2008, 80335), (2510, 64268), (5020, 32134), (10040, 16067)]