81219040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{571}}^1$

素因数の和:720

約数の個数: 96

約数和(自身を含む): 221405184

約数和(自身を除く): 140186144

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 127, 140, 160, 224, 254, 280, 508, 560, 571, 635, 889, 1016, 1120, 1142, 1270, 1778, 2032, 2284, 2540, 2855, 3556, 3997, 4064, 4445, 4568, 5080, 5710, 7112, 7994, 8890, 9136, 10160, 11420, 14224, 15988, 17780, 18272, 19985, 20320, 22840, 28448, 31976, 35560, 39970, 45680, 63952, 71120, 72517, 79940, 91360, 127904, 142240, 145034, 159880, 290068, 319760, 362585, 507619, 580136, 639520, 725170, 1015238, 1160272, 1450340, 2030476, 2320544, 2538095, 2900680, 4060952, 5076190, 5801360, 8121904, 10152380, 11602720, 16243808, 20304760, 40609520, 81219040]

約数ペア:

[(1, 81219040), (2, 40609520), (4, 20304760), (5, 16243808), (7, 11602720), (8, 10152380), (10, 8121904), (14, 5801360), (16, 5076190), (20, 4060952), (28, 2900680), (32, 2538095), (35, 2320544), (40, 2030476), (56, 1450340), (70, 1160272), (80, 1015238), (112, 725170), (127, 639520), (140, 580136), (160, 507619), (224, 362585), (254, 319760), (280, 290068), (508, 159880), (560, 145034), (571, 142240), (635, 127904), (889, 91360), (1016, 79940), (1120, 72517), (1142, 71120), (1270, 63952), (1778, 45680), (2032, 39970), (2284, 35560), (2540, 31976), (2855, 28448), (3556, 22840), (3997, 20320), (4064, 19985), (4445, 18272), (4568, 17780), (5080, 15988), (5710, 14224), (7112, 11420), (7994, 10160), (8890, 9136)]