80215720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:419

約数の個数: 128

約数和(自身を含む): 214099200

約数和(自身を除く): 133883480

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 23, 26, 38, 40, 46, 52, 65, 76, 92, 95, 104, 115, 130, 152, 184, 190, 230, 247, 260, 299, 353, 380, 437, 460, 494, 520, 598, 706, 760, 874, 920, 988, 1196, 1235, 1412, 1495, 1748, 1765, 1976, 2185, 2392, 2470, 2824, 2990, 3496, 3530, 4370, 4589, 4940, 5681, 5980, 6707, 7060, 8119, 8740, 9178, 9880, 11362, 11960, 13414, 14120, 16238, 17480, 18356, 22724, 22945, 26828, 28405, 32476, 33535, 36712, 40595, 45448, 45890, 53656, 56810, 64952, 67070, 81190, 87191, 91780, 105547, 113620, 134140, 154261, 162380, 174382, 183560, 211094, 227240, 268280, 308522, 324760, 348764, 422188, 435955, 527735, 617044, 697528, 771305, 844376, 871910, 1055470, 1234088, 1542610, 1743820, 2005393, 2110940, 3085220, 3487640, 4010786, 4221880, 6170440, 8021572, 10026965, 16043144, 20053930, 40107860, 80215720]

約数ペア:

[(1, 80215720), (2, 40107860), (4, 20053930), (5, 16043144), (8, 10026965), (10, 8021572), (13, 6170440), (19, 4221880), (20, 4010786), (23, 3487640), (26, 3085220), (38, 2110940), (40, 2005393), (46, 1743820), (52, 1542610), (65, 1234088), (76, 1055470), (92, 871910), (95, 844376), (104, 771305), (115, 697528), (130, 617044), (152, 527735), (184, 435955), (190, 422188), (230, 348764), (247, 324760), (260, 308522), (299, 268280), (353, 227240), (380, 211094), (437, 183560), (460, 174382), (494, 162380), (520, 154261), (598, 134140), (706, 113620), (760, 105547), (874, 91780), (920, 87191), (988, 81190), (1196, 67070), (1235, 64952), (1412, 56810), (1495, 53656), (1748, 45890), (1765, 45448), (1976, 40595), (2185, 36712), (2392, 33535), (2470, 32476), (2824, 28405), (2990, 26828), (3496, 22945), (3530, 22724), (4370, 18356), (4589, 17480), (4940, 16238), (5681, 14120), (5980, 13414), (6707, 11960), (7060, 11362), (8119, 9880), (8740, 9178)]