19960564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 20258636

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 89, 178, 227, 247, 356, 454, 494, 908, 988, 1157, 1691, 2314, 2951, 3382, 4313, 4628, 5902, 6764, 8626, 11804, 17252, 20203, 21983, 40406, 43966, 56069, 80812, 87932, 112138, 224276, 262639, 383857, 525278, 767714, 1050556, 1535428, 4990141, 9980282, 19960564]

約数ペア:

[(1, 19960564), (2, 9980282), (4, 4990141), (13, 1535428), (19, 1050556), (26, 767714), (38, 525278), (52, 383857), (76, 262639), (89, 224276), (178, 112138), (227, 87932), (247, 80812), (356, 56069), (454, 43966), (494, 40406), (908, 21983), (988, 20203), (1157, 17252), (1691, 11804), (2314, 8626), (2951, 6764), (3382, 5902), (4313, 4628)]