81576320

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:296

約数の個数: 128

約数和(自身を含む): 226195200

約数和(自身を除く): 144618880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 131, 139, 140, 160, 224, 262, 278, 280, 320, 448, 524, 556, 560, 640, 655, 695, 896, 917, 973, 1048, 1112, 1120, 1310, 1390, 1834, 1946, 2096, 2224, 2240, 2620, 2780, 3668, 3892, 4192, 4448, 4480, 4585, 4865, 5240, 5560, 7336, 7784, 8384, 8896, 9170, 9730, 10480, 11120, 14672, 15568, 16768, 17792, 18209, 18340, 19460, 20960, 22240, 29344, 31136, 36418, 36680, 38920, 41920, 44480, 58688, 62272, 72836, 73360, 77840, 83840, 88960, 91045, 117376, 124544, 127463, 145672, 146720, 155680, 182090, 254926, 291344, 293440, 311360, 364180, 509852, 582688, 586880, 622720, 637315, 728360, 1019704, 1165376, 1274630, 1456720, 2039408, 2330752, 2549260, 2913440, 4078816, 5098520, 5826880, 8157632, 10197040, 11653760, 16315264, 20394080, 40788160, 81576320]

約数ペア:

[(1, 81576320), (2, 40788160), (4, 20394080), (5, 16315264), (7, 11653760), (8, 10197040), (10, 8157632), (14, 5826880), (16, 5098520), (20, 4078816), (28, 2913440), (32, 2549260), (35, 2330752), (40, 2039408), (56, 1456720), (64, 1274630), (70, 1165376), (80, 1019704), (112, 728360), (128, 637315), (131, 622720), (139, 586880), (140, 582688), (160, 509852), (224, 364180), (262, 311360), (278, 293440), (280, 291344), (320, 254926), (448, 182090), (524, 155680), (556, 146720), (560, 145672), (640, 127463), (655, 124544), (695, 117376), (896, 91045), (917, 88960), (973, 83840), (1048, 77840), (1112, 73360), (1120, 72836), (1310, 62272), (1390, 58688), (1834, 44480), (1946, 41920), (2096, 38920), (2224, 36680), (2240, 36418), (2620, 31136), (2780, 29344), (3668, 22240), (3892, 20960), (4192, 19460), (4448, 18340), (4480, 18209), (4585, 17792), (4865, 16768), (5240, 15568), (5560, 14672), (7336, 11120), (7784, 10480), (8384, 9730), (8896, 9170)]