21004230

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53857}}^1$

素因数の和:53880

約数の個数: 32

約数和(自身を含む): 54288864

約数和(自身を除く): 33284634

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53857, 107714, 161571, 269285, 323142, 538570, 700141, 807855, 1400282, 1615710, 2100423, 3500705, 4200846, 7001410, 10502115, 21004230]

約数ペア:

[(1, 21004230), (2, 10502115), (3, 7001410), (5, 4200846), (6, 3500705), (10, 2100423), (13, 1615710), (15, 1400282), (26, 807855), (30, 700141), (39, 538570), (65, 323142), (78, 269285), (130, 161571), (195, 107714), (390, 53857)]