20825120

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5659}}^1$

素因数の和:5697

約数の個数: 48

約数和(自身を含む): 51347520

約数和(自身を除く): 30522400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5659, 11318, 22636, 28295, 45272, 56590, 90544, 113180, 130157, 181088, 226360, 260314, 452720, 520628, 650785, 905440, 1041256, 1301570, 2082512, 2603140, 4165024, 5206280, 10412560, 20825120]

約数ペア:

[(1, 20825120), (2, 10412560), (4, 5206280), (5, 4165024), (8, 2603140), (10, 2082512), (16, 1301570), (20, 1041256), (23, 905440), (32, 650785), (40, 520628), (46, 452720), (80, 260314), (92, 226360), (115, 181088), (160, 130157), (184, 113180), (230, 90544), (368, 56590), (460, 45272), (736, 28295), (920, 22636), (1840, 11318), (3680, 5659)]