208728840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{887}}^1$

素因数の和:991

約数の個数: 128

約数和(自身を含む): 655983360

約数和(自身を除く): 447254520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 53, 60, 74, 106, 111, 120, 148, 159, 185, 212, 222, 265, 296, 318, 370, 424, 444, 530, 555, 636, 740, 795, 887, 888, 1060, 1110, 1272, 1480, 1590, 1774, 1961, 2120, 2220, 2661, 3180, 3548, 3922, 4435, 4440, 5322, 5883, 6360, 7096, 7844, 8870, 9805, 10644, 11766, 13305, 15688, 17740, 19610, 21288, 23532, 26610, 29415, 32819, 35480, 39220, 47011, 47064, 53220, 58830, 65638, 78440, 94022, 98457, 106440, 117660, 131276, 141033, 164095, 188044, 196914, 235055, 235320, 262552, 282066, 328190, 376088, 393828, 470110, 492285, 564132, 656380, 705165, 787656, 940220, 984570, 1128264, 1312760, 1410330, 1739407, 1880440, 1969140, 2820660, 3478814, 3938280, 5218221, 5641320, 6957628, 8697035, 10436442, 13915256, 17394070, 20872884, 26091105, 34788140, 41745768, 52182210, 69576280, 104364420, 208728840]

約数ペア:

[(1, 208728840), (2, 104364420), (3, 69576280), (4, 52182210), (5, 41745768), (6, 34788140), (8, 26091105), (10, 20872884), (12, 17394070), (15, 13915256), (20, 10436442), (24, 8697035), (30, 6957628), (37, 5641320), (40, 5218221), (53, 3938280), (60, 3478814), (74, 2820660), (106, 1969140), (111, 1880440), (120, 1739407), (148, 1410330), (159, 1312760), (185, 1128264), (212, 984570), (222, 940220), (265, 787656), (296, 705165), (318, 656380), (370, 564132), (424, 492285), (444, 470110), (530, 393828), (555, 376088), (636, 328190), (740, 282066), (795, 262552), (887, 235320), (888, 235055), (1060, 196914), (1110, 188044), (1272, 164095), (1480, 141033), (1590, 131276), (1774, 117660), (1961, 106440), (2120, 98457), (2220, 94022), (2661, 78440), (3180, 65638), (3548, 58830), (3922, 53220), (4435, 47064), (4440, 47011), (5322, 39220), (5883, 35480), (6360, 32819), (7096, 29415), (7844, 26610), (8870, 23532), (9805, 21288), (10644, 19610), (11766, 17740), (13305, 15688)]