201920979

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{983}}^1$

素因数の和:1251

約数の個数: 32

約数和(自身を含む): 304174080

約数和(自身を除く): 102253101

約数列:

[1, 3, 13, 23, 39, 69, 229, 299, 687, 897, 983, 2949, 2977, 5267, 8931, 12779, 15801, 22609, 38337, 67827, 68471, 205413, 225107, 293917, 675321, 881751, 2926391, 5177461, 8779173, 15532383, 67306993, 201920979]

約数ペア:

[(1, 201920979), (3, 67306993), (13, 15532383), (23, 8779173), (39, 5177461), (69, 2926391), (229, 881751), (299, 675321), (687, 293917), (897, 225107), (983, 205413), (2949, 68471), (2977, 67827), (5267, 38337), (8931, 22609), (12779, 15801)]