20405954

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1\times {\mathrm{619}}^1$

素因数の和:985

約数の個数: 16

約数和(自身を含む): 31337280

約数和(自身を除く): 10931326

約数列:

[1, 2, 53, 106, 311, 619, 622, 1238, 16483, 32807, 32966, 65614, 192509, 385018, 10202977, 20405954]

約数ペア:

[(1, 20405954), (2, 10202977), (53, 385018), (106, 192509), (311, 65614), (619, 32966), (622, 32807), (1238, 16483)]