19977480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:491

約数の個数: 96

約数和(自身を含む): 65482560

約数和(自身を除く): 45505080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 211, 263, 360, 422, 526, 633, 789, 844, 1052, 1055, 1266, 1315, 1578, 1688, 1899, 2104, 2110, 2367, 2532, 2630, 3156, 3165, 3798, 3945, 4220, 4734, 5064, 5260, 6312, 6330, 7596, 7890, 8440, 9468, 9495, 10520, 11835, 12660, 15192, 15780, 18936, 18990, 23670, 25320, 31560, 37980, 47340, 55493, 75960, 94680, 110986, 166479, 221972, 277465, 332958, 443944, 499437, 554930, 665916, 832395, 998874, 1109860, 1331832, 1664790, 1997748, 2219720, 2497185, 3329580, 3995496, 4994370, 6659160, 9988740, 19977480]

約数ペア:

[(1, 19977480), (2, 9988740), (3, 6659160), (4, 4994370), (5, 3995496), (6, 3329580), (8, 2497185), (9, 2219720), (10, 1997748), (12, 1664790), (15, 1331832), (18, 1109860), (20, 998874), (24, 832395), (30, 665916), (36, 554930), (40, 499437), (45, 443944), (60, 332958), (72, 277465), (90, 221972), (120, 166479), (180, 110986), (211, 94680), (263, 75960), (360, 55493), (422, 47340), (526, 37980), (633, 31560), (789, 25320), (844, 23670), (1052, 18990), (1055, 18936), (1266, 15780), (1315, 15192), (1578, 12660), (1688, 11835), (1899, 10520), (2104, 9495), (2110, 9468), (2367, 8440), (2532, 7890), (2630, 7596), (3156, 6330), (3165, 6312), (3798, 5260), (3945, 5064), (4220, 4734)]