156728120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{91121}}^1$

素因数の和:91175

約数の個数: 32

約数和(自身を含む): 360843120

約数和(自身を除く): 204115000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 91121, 182242, 364484, 455605, 728968, 911210, 1822420, 3644840, 3918203, 7836406, 15672812, 19591015, 31345624, 39182030, 78364060, 156728120]

約数ペア:

[(1, 156728120), (2, 78364060), (4, 39182030), (5, 31345624), (8, 19591015), (10, 15672812), (20, 7836406), (40, 3918203), (43, 3644840), (86, 1822420), (172, 911210), (215, 728968), (344, 455605), (430, 364484), (860, 182242), (1720, 91121)]