1276142720

素因数分解:

$2^7\times 5^1\times {\mathrm{1993973}}^1$

素因数の和:1993992

約数の個数: 32

約数和(自身を含む): 3050780220

約数和(自身を除く): 1774637500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1993973, 3987946, 7975892, 9969865, 15951784, 19939730, 31903568, 39879460, 63807136, 79758920, 127614272, 159517840, 255228544, 319035680, 638071360, 1276142720]

約数ペア:

[(1, 1276142720), (2, 638071360), (4, 319035680), (5, 255228544), (8, 159517840), (10, 127614272), (16, 79758920), (20, 63807136), (32, 39879460), (40, 31903568), (64, 19939730), (80, 15951784), (128, 9969865), (160, 7975892), (320, 3987946), (640, 1993973)]