21056040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2543}}^1$

素因数の和:2583

約数の個数: 96

約数和(自身を含む): 71435520

約数和(自身を除く): 50379480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 60, 69, 72, 90, 92, 115, 120, 138, 180, 184, 207, 230, 276, 345, 360, 414, 460, 552, 690, 828, 920, 1035, 1380, 1656, 2070, 2543, 2760, 4140, 5086, 7629, 8280, 10172, 12715, 15258, 20344, 22887, 25430, 30516, 38145, 45774, 50860, 58489, 61032, 76290, 91548, 101720, 114435, 116978, 152580, 175467, 183096, 228870, 233956, 292445, 305160, 350934, 457740, 467912, 526401, 584890, 701868, 877335, 915480, 1052802, 1169780, 1403736, 1754670, 2105604, 2339560, 2632005, 3509340, 4211208, 5264010, 7018680, 10528020, 21056040]

約数ペア:

[(1, 21056040), (2, 10528020), (3, 7018680), (4, 5264010), (5, 4211208), (6, 3509340), (8, 2632005), (9, 2339560), (10, 2105604), (12, 1754670), (15, 1403736), (18, 1169780), (20, 1052802), (23, 915480), (24, 877335), (30, 701868), (36, 584890), (40, 526401), (45, 467912), (46, 457740), (60, 350934), (69, 305160), (72, 292445), (90, 233956), (92, 228870), (115, 183096), (120, 175467), (138, 152580), (180, 116978), (184, 114435), (207, 101720), (230, 91548), (276, 76290), (345, 61032), (360, 58489), (414, 50860), (460, 45774), (552, 38145), (690, 30516), (828, 25430), (920, 22887), (1035, 20344), (1380, 15258), (1656, 12715), (2070, 10172), (2543, 8280), (2760, 7629), (4140, 5086)]