278340231

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1\times {\mathrm{571}}^1$

素因数の和:1047

約数の個数: 32

約数和(自身を含む): 415134720

約数和(自身を除く): 136794489

約数列:

[1, 3, 13, 29, 39, 87, 377, 431, 571, 1131, 1293, 1713, 5603, 7423, 12499, 16559, 16809, 22269, 37497, 49677, 162487, 215267, 246101, 487461, 645801, 738303, 3199313, 7136929, 9597939, 21410787, 92780077, 278340231]

約数ペア:

[(1, 278340231), (3, 92780077), (13, 21410787), (29, 9597939), (39, 7136929), (87, 3199313), (377, 738303), (431, 645801), (571, 487461), (1131, 246101), (1293, 215267), (1713, 162487), (5603, 49677), (7423, 37497), (12499, 22269), (16559, 16809)]