209212025

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 310313472

約数和(自身を除く): 101101447

約数列:

[1, 5, 11, 23, 25, 31, 55, 97, 115, 121, 155, 253, 275, 341, 485, 575, 605, 713, 775, 1067, 1265, 1705, 2231, 2425, 2783, 3007, 3025, 3565, 3751, 5335, 6325, 7843, 8525, 11155, 11737, 13915, 15035, 17825, 18755, 24541, 26675, 33077, 39215, 55775, 58685, 69161, 69575, 75175, 86273, 93775, 122705, 165385, 196075, 269951, 293425, 345805, 363847, 431365, 613525, 760771, 826925, 1349755, 1729025, 1819235, 2156825, 3803855, 6748775, 8368481, 9096175, 19019275, 41842405, 209212025]

約数ペア:

[(1, 209212025), (5, 41842405), (11, 19019275), (23, 9096175), (25, 8368481), (31, 6748775), (55, 3803855), (97, 2156825), (115, 1819235), (121, 1729025), (155, 1349755), (253, 826925), (275, 760771), (341, 613525), (485, 431365), (575, 363847), (605, 345805), (713, 293425), (775, 269951), (1067, 196075), (1265, 165385), (1705, 122705), (2231, 93775), (2425, 86273), (2783, 75175), (3007, 69575), (3025, 69161), (3565, 58685), (3751, 55775), (5335, 39215), (6325, 33077), (7843, 26675), (8525, 24541), (11155, 18755), (11737, 17825), (13915, 15035)]