640023208

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:176

約数の個数: 192

約数和(自身を含む): 1551312000

約数和(自身を除く): 911288792

約数列:

[1, 2, 4, 8, 11, 17, 19, 22, 23, 34, 38, 44, 46, 68, 76, 88, 89, 92, 121, 136, 152, 178, 184, 187, 209, 242, 253, 323, 356, 374, 391, 418, 437, 484, 506, 646, 712, 748, 782, 836, 874, 968, 979, 1012, 1292, 1496, 1513, 1564, 1672, 1691, 1748, 1958, 2024, 2047, 2057, 2299, 2584, 2783, 3026, 3128, 3382, 3496, 3553, 3916, 4094, 4114, 4301, 4598, 4807, 5566, 6052, 6764, 7106, 7429, 7832, 8188, 8228, 8602, 9196, 9614, 10769, 11132, 12104, 13528, 14212, 14858, 16376, 16456, 16643, 17204, 18392, 18601, 19228, 21538, 22264, 22517, 28424, 28747, 29716, 33286, 34408, 34799, 37202, 38456, 38893, 39083, 43076, 45034, 47311, 52877, 57494, 59432, 66572, 69598, 74404, 77786, 78166, 81719, 86152, 90068, 94622, 105754, 114988, 133144, 139196, 148808, 155572, 156332, 163438, 180136, 183073, 189244, 204611, 211508, 229976, 247687, 278392, 311144, 312664, 316217, 326876, 366146, 378488, 382789, 409222, 423016, 427823, 495374, 632434, 653752, 661181, 732292, 765578, 818444, 855646, 898909, 990748, 1264868, 1322362, 1464584, 1531156, 1636888, 1711292, 1797818, 1981496, 2529736, 2644724, 3062312, 3422584, 3478387, 3595636, 4210679, 4706053, 5289448, 6956774, 7191272, 7272991, 8421358, 9412106, 13913548, 14545982, 16842716, 18824212, 27827096, 29091964, 33685432, 37648424, 58183928, 80002901, 160005802, 320011604, 640023208]

約数ペア:

[(1, 640023208), (2, 320011604), (4, 160005802), (8, 80002901), (11, 58183928), (17, 37648424), (19, 33685432), (22, 29091964), (23, 27827096), (34, 18824212), (38, 16842716), (44, 14545982), (46, 13913548), (68, 9412106), (76, 8421358), (88, 7272991), (89, 7191272), (92, 6956774), (121, 5289448), (136, 4706053), (152, 4210679), (178, 3595636), (184, 3478387), (187, 3422584), (209, 3062312), (242, 2644724), (253, 2529736), (323, 1981496), (356, 1797818), (374, 1711292), (391, 1636888), (418, 1531156), (437, 1464584), (484, 1322362), (506, 1264868), (646, 990748), (712, 898909), (748, 855646), (782, 818444), (836, 765578), (874, 732292), (968, 661181), (979, 653752), (1012, 632434), (1292, 495374), (1496, 427823), (1513, 423016), (1564, 409222), (1672, 382789), (1691, 378488), (1748, 366146), (1958, 326876), (2024, 316217), (2047, 312664), (2057, 311144), (2299, 278392), (2584, 247687), (2783, 229976), (3026, 211508), (3128, 204611), (3382, 189244), (3496, 183073), (3553, 180136), (3916, 163438), (4094, 156332), (4114, 155572), (4301, 148808), (4598, 139196), (4807, 133144), (5566, 114988), (6052, 105754), (6764, 94622), (7106, 90068), (7429, 86152), (7832, 81719), (8188, 78166), (8228, 77786), (8602, 74404), (9196, 69598), (9614, 66572), (10769, 59432), (11132, 57494), (12104, 52877), (13528, 47311), (14212, 45034), (14858, 43076), (16376, 39083), (16456, 38893), (16643, 38456), (17204, 37202), (18392, 34799), (18601, 34408), (19228, 33286), (21538, 29716), (22264, 28747), (22517, 28424)]