161981388

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:707

約数の個数: 72

約数和(自身を含む): 419328000

約数和(自身を除く): 257346612

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 127, 142, 213, 254, 284, 381, 426, 499, 508, 639, 762, 852, 998, 1143, 1278, 1497, 1524, 1996, 2286, 2556, 2994, 4491, 4572, 5988, 8982, 9017, 17964, 18034, 27051, 35429, 36068, 54102, 63373, 70858, 81153, 106287, 108204, 126746, 141716, 162306, 190119, 212574, 253492, 318861, 324612, 380238, 425148, 570357, 637722, 760476, 1140714, 1275444, 2281428, 4499483, 8998966, 13498449, 17997932, 26996898, 40495347, 53993796, 80990694, 161981388]

約数ペア:

[(1, 161981388), (2, 80990694), (3, 53993796), (4, 40495347), (6, 26996898), (9, 17997932), (12, 13498449), (18, 8998966), (36, 4499483), (71, 2281428), (127, 1275444), (142, 1140714), (213, 760476), (254, 637722), (284, 570357), (381, 425148), (426, 380238), (499, 324612), (508, 318861), (639, 253492), (762, 212574), (852, 190119), (998, 162306), (1143, 141716), (1278, 126746), (1497, 108204), (1524, 106287), (1996, 81153), (2286, 70858), (2556, 63373), (2994, 54102), (4491, 36068), (4572, 35429), (5988, 27051), (8982, 18034), (9017, 17964)]