211578156

素因数分解:

$2^2\times 3^5\times {\mathrm{109}}^1\times {\mathrm{1997}}^1$

素因数の和:2125

約数の個数: 72

約数和(自身を含む): 559999440

約数和(自身を除く): 348421284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 109, 162, 218, 243, 324, 327, 436, 486, 654, 972, 981, 1308, 1962, 1997, 2943, 3924, 3994, 5886, 5991, 7988, 8829, 11772, 11982, 17658, 17973, 23964, 26487, 35316, 35946, 52974, 53919, 71892, 105948, 107838, 161757, 215676, 217673, 323514, 435346, 485271, 647028, 653019, 870692, 970542, 1306038, 1941084, 1959057, 2612076, 3918114, 5877171, 7836228, 11754342, 17631513, 23508684, 35263026, 52894539, 70526052, 105789078, 211578156]

約数ペア:

[(1, 211578156), (2, 105789078), (3, 70526052), (4, 52894539), (6, 35263026), (9, 23508684), (12, 17631513), (18, 11754342), (27, 7836228), (36, 5877171), (54, 3918114), (81, 2612076), (108, 1959057), (109, 1941084), (162, 1306038), (218, 970542), (243, 870692), (324, 653019), (327, 647028), (436, 485271), (486, 435346), (654, 323514), (972, 217673), (981, 215676), (1308, 161757), (1962, 107838), (1997, 105948), (2943, 71892), (3924, 53919), (3994, 52974), (5886, 35946), (5991, 35316), (7988, 26487), (8829, 23964), (11772, 17973), (11982, 17658)]