20683440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1291

約数の個数: 120

約数和(自身を含む): 72540000

約数和(自身を除く): 51856560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1249, 1380, 1656, 1840, 2070, 2498, 2760, 3312, 3747, 4140, 4996, 5520, 6245, 7494, 8280, 9992, 11241, 12490, 14988, 16560, 18735, 19984, 22482, 24980, 28727, 29976, 37470, 44964, 49960, 56205, 57454, 59952, 74940, 86181, 89928, 99920, 112410, 114908, 143635, 149880, 172362, 179856, 224820, 229816, 258543, 287270, 299760, 344724, 430905, 449640, 459632, 517086, 574540, 689448, 861810, 899280, 1034172, 1149080, 1292715, 1378896, 1723620, 2068344, 2298160, 2585430, 3447240, 4136688, 5170860, 6894480, 10341720, 20683440]

約数ペア:

[(1, 20683440), (2, 10341720), (3, 6894480), (4, 5170860), (5, 4136688), (6, 3447240), (8, 2585430), (9, 2298160), (10, 2068344), (12, 1723620), (15, 1378896), (16, 1292715), (18, 1149080), (20, 1034172), (23, 899280), (24, 861810), (30, 689448), (36, 574540), (40, 517086), (45, 459632), (46, 449640), (48, 430905), (60, 344724), (69, 299760), (72, 287270), (80, 258543), (90, 229816), (92, 224820), (115, 179856), (120, 172362), (138, 149880), (144, 143635), (180, 114908), (184, 112410), (207, 99920), (230, 89928), (240, 86181), (276, 74940), (345, 59952), (360, 57454), (368, 56205), (414, 49960), (460, 44964), (552, 37470), (690, 29976), (720, 28727), (828, 24980), (920, 22482), (1035, 19984), (1104, 18735), (1249, 16560), (1380, 14988), (1656, 12490), (1840, 11241), (2070, 9992), (2498, 8280), (2760, 7494), (3312, 6245), (3747, 5520), (4140, 4996)]