81272960

素因数分解:

$2^7\times 5^1\times {\mathrm{126989}}^1$

素因数の和:127008

約数の個数: 32

約数和(自身を含む): 194294700

約数和(自身を除く): 113021740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126989, 253978, 507956, 634945, 1015912, 1269890, 2031824, 2539780, 4063648, 5079560, 8127296, 10159120, 16254592, 20318240, 40636480, 81272960]

約数ペア:

[(1, 81272960), (2, 40636480), (4, 20318240), (5, 16254592), (8, 10159120), (10, 8127296), (16, 5079560), (20, 4063648), (32, 2539780), (40, 2031824), (64, 1269890), (80, 1015912), (128, 634945), (160, 507956), (320, 253978), (640, 126989)]