204712156

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 420290640

約数和(自身を除く): 215578484

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 113, 121, 197, 209, 226, 242, 394, 418, 452, 484, 788, 836, 1243, 2147, 2167, 2299, 2486, 3743, 4294, 4334, 4598, 4972, 7486, 8588, 8668, 9196, 13673, 14972, 22261, 23617, 23837, 27346, 41173, 44522, 47234, 47674, 54692, 82346, 89044, 94468, 95348, 164692, 244871, 259787, 422959, 452903, 489742, 519574, 845918, 905806, 979484, 1039148, 1691836, 1811612, 2693581, 4652549, 5387162, 9305098, 10774324, 18610196, 51178039, 102356078, 204712156]

約数ペア:

[(1, 204712156), (2, 102356078), (4, 51178039), (11, 18610196), (19, 10774324), (22, 9305098), (38, 5387162), (44, 4652549), (76, 2693581), (113, 1811612), (121, 1691836), (197, 1039148), (209, 979484), (226, 905806), (242, 845918), (394, 519574), (418, 489742), (452, 452903), (484, 422959), (788, 259787), (836, 244871), (1243, 164692), (2147, 95348), (2167, 94468), (2299, 89044), (2486, 82346), (3743, 54692), (4294, 47674), (4334, 47234), (4598, 44522), (4972, 41173), (7486, 27346), (8588, 23837), (8668, 23617), (9196, 22261), (13673, 14972)]