20405190

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{52321}}^1$

素因数の和:52344

約数の個数: 32

約数和(自身を含む): 52740576

約数和(自身を除く): 32335386

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 52321, 104642, 156963, 261605, 313926, 523210, 680173, 784815, 1360346, 1569630, 2040519, 3400865, 4081038, 6801730, 10202595, 20405190]

約数ペア:

[(1, 20405190), (2, 10202595), (3, 6801730), (5, 4081038), (6, 3400865), (10, 2040519), (13, 1569630), (15, 1360346), (26, 784815), (30, 680173), (39, 523210), (65, 313926), (78, 261605), (130, 156963), (195, 104642), (390, 52321)]