19745883

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{631}}^1$

素因数の和:720

約数の個数: 32

約数和(自身を含む): 31347200

約数和(自身を除く): 11601317

約数列:

[1, 3, 9, 19, 27, 57, 61, 171, 183, 513, 549, 631, 1159, 1647, 1893, 3477, 5679, 10431, 11989, 17037, 31293, 35967, 38491, 107901, 115473, 323703, 346419, 731329, 1039257, 2193987, 6581961, 19745883]

約数ペア:

[(1, 19745883), (3, 6581961), (9, 2193987), (19, 1039257), (27, 731329), (57, 346419), (61, 323703), (171, 115473), (183, 107901), (513, 38491), (549, 35967), (631, 31293), (1159, 17037), (1647, 11989), (1893, 10431), (3477, 5679)]