21288010

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1597}}^1$

素因数の和:1678

約数の個数: 32

約数和(自身を含む): 40499712

約数和(自身を除く): 19211702

約数列:

[1, 2, 5, 10, 31, 43, 62, 86, 155, 215, 310, 430, 1333, 1597, 2666, 3194, 6665, 7985, 13330, 15970, 49507, 68671, 99014, 137342, 247535, 343355, 495070, 686710, 2128801, 4257602, 10644005, 21288010]

約数ペア:

[(1, 21288010), (2, 10644005), (5, 4257602), (10, 2128801), (31, 686710), (43, 495070), (62, 343355), (86, 247535), (155, 137342), (215, 99014), (310, 68671), (430, 49507), (1333, 15970), (1597, 13330), (2666, 7985), (3194, 6665)]