78642520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:473

約数の個数: 128

約数和(自身を含む): 212544000

約数和(自身を除く): 133901480

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 23, 38, 40, 44, 46, 55, 76, 88, 92, 95, 110, 115, 152, 184, 190, 209, 220, 230, 253, 380, 409, 418, 437, 440, 460, 506, 760, 818, 836, 874, 920, 1012, 1045, 1265, 1636, 1672, 1748, 2024, 2045, 2090, 2185, 2530, 3272, 3496, 4090, 4180, 4370, 4499, 4807, 5060, 7771, 8180, 8360, 8740, 8998, 9407, 9614, 10120, 15542, 16360, 17480, 17996, 18814, 19228, 22495, 24035, 31084, 35992, 37628, 38456, 38855, 44990, 47035, 48070, 62168, 75256, 77710, 85481, 89980, 94070, 96140, 103477, 155420, 170962, 178733, 179960, 188140, 192280, 206954, 310840, 341924, 357466, 376280, 413908, 427405, 517385, 683848, 714932, 827816, 854810, 893665, 1034770, 1429864, 1709620, 1787330, 1966063, 2069540, 3419240, 3574660, 3932126, 4139080, 7149320, 7864252, 9830315, 15728504, 19660630, 39321260, 78642520]

約数ペア:

[(1, 78642520), (2, 39321260), (4, 19660630), (5, 15728504), (8, 9830315), (10, 7864252), (11, 7149320), (19, 4139080), (20, 3932126), (22, 3574660), (23, 3419240), (38, 2069540), (40, 1966063), (44, 1787330), (46, 1709620), (55, 1429864), (76, 1034770), (88, 893665), (92, 854810), (95, 827816), (110, 714932), (115, 683848), (152, 517385), (184, 427405), (190, 413908), (209, 376280), (220, 357466), (230, 341924), (253, 310840), (380, 206954), (409, 192280), (418, 188140), (437, 179960), (440, 178733), (460, 170962), (506, 155420), (760, 103477), (818, 96140), (836, 94070), (874, 89980), (920, 85481), (1012, 77710), (1045, 75256), (1265, 62168), (1636, 48070), (1672, 47035), (1748, 44990), (2024, 38855), (2045, 38456), (2090, 37628), (2185, 35992), (2530, 31084), (3272, 24035), (3496, 22495), (4090, 19228), (4180, 18814), (4370, 17996), (4499, 17480), (4807, 16360), (5060, 15542), (7771, 10120), (8180, 9614), (8360, 9407), (8740, 8998)]