19705839

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 28984320

約数和(自身を除く): 9278481

約数列:

[1, 3, 17, 51, 67, 73, 79, 201, 219, 237, 1139, 1241, 1343, 3417, 3723, 4029, 4891, 5293, 5767, 14673, 15879, 17301, 83147, 89981, 98039, 249441, 269943, 294117, 386389, 1159167, 6568613, 19705839]

約数ペア:

[(1, 19705839), (3, 6568613), (17, 1159167), (51, 386389), (67, 294117), (73, 269943), (79, 249441), (201, 98039), (219, 89981), (237, 83147), (1139, 17301), (1241, 15879), (1343, 14673), (3417, 5767), (3723, 5293), (4029, 4891)]