19905392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1153}}^1$

素因数の和:1257

約数の個数: 40

約数和(自身を含む): 42070224

約数和(自身を除く): 22164832

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 83, 104, 166, 208, 332, 664, 1079, 1153, 1328, 2158, 2306, 4316, 4612, 8632, 9224, 14989, 17264, 18448, 29978, 59956, 95699, 119912, 191398, 239824, 382796, 765592, 1244087, 1531184, 2488174, 4976348, 9952696, 19905392]

約数ペア:

[(1, 19905392), (2, 9952696), (4, 4976348), (8, 2488174), (13, 1531184), (16, 1244087), (26, 765592), (52, 382796), (83, 239824), (104, 191398), (166, 119912), (208, 95699), (332, 59956), (664, 29978), (1079, 18448), (1153, 17264), (1328, 14989), (2158, 9224), (2306, 8632), (4316, 4612)]