20649240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1399}}^1$

素因数の和:1457

約数の個数: 96

約数和(自身を含む): 68796000

約数和(自身を除く): 48146760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 41, 45, 60, 72, 82, 90, 120, 123, 164, 180, 205, 246, 328, 360, 369, 410, 492, 615, 738, 820, 984, 1230, 1399, 1476, 1640, 1845, 2460, 2798, 2952, 3690, 4197, 4920, 5596, 6995, 7380, 8394, 11192, 12591, 13990, 14760, 16788, 20985, 25182, 27980, 33576, 41970, 50364, 55960, 57359, 62955, 83940, 100728, 114718, 125910, 167880, 172077, 229436, 251820, 286795, 344154, 458872, 503640, 516231, 573590, 688308, 860385, 1032462, 1147180, 1376616, 1720770, 2064924, 2294360, 2581155, 3441540, 4129848, 5162310, 6883080, 10324620, 20649240]

約数ペア:

[(1, 20649240), (2, 10324620), (3, 6883080), (4, 5162310), (5, 4129848), (6, 3441540), (8, 2581155), (9, 2294360), (10, 2064924), (12, 1720770), (15, 1376616), (18, 1147180), (20, 1032462), (24, 860385), (30, 688308), (36, 573590), (40, 516231), (41, 503640), (45, 458872), (60, 344154), (72, 286795), (82, 251820), (90, 229436), (120, 172077), (123, 167880), (164, 125910), (180, 114718), (205, 100728), (246, 83940), (328, 62955), (360, 57359), (369, 55960), (410, 50364), (492, 41970), (615, 33576), (738, 27980), (820, 25182), (984, 20985), (1230, 16788), (1399, 14760), (1476, 13990), (1640, 12591), (1845, 11192), (2460, 8394), (2798, 7380), (2952, 6995), (3690, 5596), (4197, 4920)]