20805285

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1973}}^1$

素因数の和:2037

約数の個数: 32

約数和(自身を含む): 36005760

約数和(自身を除く): 15200475

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 555, 703, 1973, 2109, 3515, 5919, 9865, 10545, 29595, 37487, 73001, 112461, 187435, 219003, 365005, 562305, 1095015, 1387019, 4161057, 6935095, 20805285]

約数ペア:

[(1, 20805285), (3, 6935095), (5, 4161057), (15, 1387019), (19, 1095015), (37, 562305), (57, 365005), (95, 219003), (111, 187435), (185, 112461), (285, 73001), (555, 37487), (703, 29595), (1973, 10545), (2109, 9865), (3515, 5919)]