21871020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3539}}^1$

素因数の和:3654

約数の個数: 48

約数和(自身を含む): 61850880

約数和(自身を除く): 39979860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 103, 206, 309, 412, 515, 618, 1030, 1236, 1545, 2060, 3090, 3539, 6180, 7078, 10617, 14156, 17695, 21234, 35390, 42468, 53085, 70780, 106170, 212340, 364517, 729034, 1093551, 1458068, 1822585, 2187102, 3645170, 4374204, 5467755, 7290340, 10935510, 21871020]

約数ペア:

[(1, 21871020), (2, 10935510), (3, 7290340), (4, 5467755), (5, 4374204), (6, 3645170), (10, 2187102), (12, 1822585), (15, 1458068), (20, 1093551), (30, 729034), (60, 364517), (103, 212340), (206, 106170), (309, 70780), (412, 53085), (515, 42468), (618, 35390), (1030, 21234), (1236, 17695), (1545, 14156), (2060, 10617), (3090, 7078), (3539, 6180)]