157215680

素因数分解:

$2^6\times 5^1\times {\mathrm{491299}}^1$

素因数の和:491316

約数の個数: 28

約数和(自身を含む): 374370600

約数和(自身を除く): 217154920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 491299, 982598, 1965196, 2456495, 3930392, 4912990, 7860784, 9825980, 15721568, 19651960, 31443136, 39303920, 78607840, 157215680]

約数ペア:

[(1, 157215680), (2, 78607840), (4, 39303920), (5, 31443136), (8, 19651960), (10, 15721568), (16, 9825980), (20, 7860784), (32, 4912990), (40, 3930392), (64, 2456495), (80, 1965196), (160, 982598), (320, 491299)]