21989650

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{293}}^1$

素因数の和:403

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 21757550

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 79, 95, 158, 190, 293, 395, 475, 586, 790, 950, 1465, 1501, 1975, 2930, 3002, 3950, 5567, 7325, 7505, 11134, 14650, 15010, 23147, 27835, 37525, 46294, 55670, 75050, 115735, 139175, 231470, 278350, 439793, 578675, 879586, 1157350, 2198965, 4397930, 10994825, 21989650]

約数ペア:

[(1, 21989650), (2, 10994825), (5, 4397930), (10, 2198965), (19, 1157350), (25, 879586), (38, 578675), (50, 439793), (79, 278350), (95, 231470), (158, 139175), (190, 115735), (293, 75050), (395, 55670), (475, 46294), (586, 37525), (790, 27835), (950, 23147), (1465, 15010), (1501, 14650), (1975, 11134), (2930, 7505), (3002, 7325), (3950, 5567)]