18538520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{463}}^1$

素因数の和:505

約数の個数: 128

約数和(自身を含む): 56125440

約数和(自身を除く): 37586920

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 463, 520, 572, 616, 715, 728, 770, 910, 926, 1001, 1144, 1430, 1540, 1820, 1852, 2002, 2315, 2860, 3080, 3241, 3640, 3704, 4004, 4630, 5005, 5093, 5720, 6019, 6482, 8008, 9260, 10010, 10186, 12038, 12964, 16205, 18520, 20020, 20372, 24076, 25465, 25928, 30095, 32410, 35651, 40040, 40744, 42133, 48152, 50930, 60190, 64820, 66209, 71302, 84266, 101860, 120380, 129640, 132418, 142604, 168532, 178255, 203720, 210665, 240760, 264836, 285208, 331045, 337064, 356510, 421330, 463463, 529672, 662090, 713020, 842660, 926926, 1324180, 1426040, 1685320, 1853852, 2317315, 2648360, 3707704, 4634630, 9269260, 18538520]

約数ペア:

[(1, 18538520), (2, 9269260), (4, 4634630), (5, 3707704), (7, 2648360), (8, 2317315), (10, 1853852), (11, 1685320), (13, 1426040), (14, 1324180), (20, 926926), (22, 842660), (26, 713020), (28, 662090), (35, 529672), (40, 463463), (44, 421330), (52, 356510), (55, 337064), (56, 331045), (65, 285208), (70, 264836), (77, 240760), (88, 210665), (91, 203720), (104, 178255), (110, 168532), (130, 142604), (140, 132418), (143, 129640), (154, 120380), (182, 101860), (220, 84266), (260, 71302), (280, 66209), (286, 64820), (308, 60190), (364, 50930), (385, 48152), (440, 42133), (455, 40744), (463, 40040), (520, 35651), (572, 32410), (616, 30095), (715, 25928), (728, 25465), (770, 24076), (910, 20372), (926, 20020), (1001, 18520), (1144, 16205), (1430, 12964), (1540, 12038), (1820, 10186), (1852, 10010), (2002, 9260), (2315, 8008), (2860, 6482), (3080, 6019), (3241, 5720), (3640, 5093), (3704, 5005), (4004, 4630)]