20161800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{487}}^1$

素因数の和:532

約数の個数: 144

約数和(自身を含む): 70799040

約数和(自身を除く): 50637240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 25, 30, 36, 40, 45, 46, 50, 60, 69, 72, 75, 90, 92, 100, 115, 120, 138, 150, 180, 184, 200, 207, 225, 230, 276, 300, 345, 360, 414, 450, 460, 487, 552, 575, 600, 690, 828, 900, 920, 974, 1035, 1150, 1380, 1461, 1656, 1725, 1800, 1948, 2070, 2300, 2435, 2760, 2922, 3450, 3896, 4140, 4383, 4600, 4870, 5175, 5844, 6900, 7305, 8280, 8766, 9740, 10350, 11201, 11688, 12175, 13800, 14610, 17532, 19480, 20700, 21915, 22402, 24350, 29220, 33603, 35064, 36525, 41400, 43830, 44804, 48700, 56005, 58440, 67206, 73050, 87660, 89608, 97400, 100809, 109575, 112010, 134412, 146100, 168015, 175320, 201618, 219150, 224020, 268824, 280025, 292200, 336030, 403236, 438300, 448040, 504045, 560050, 672060, 806472, 840075, 876600, 1008090, 1120100, 1344120, 1680150, 2016180, 2240200, 2520225, 3360300, 4032360, 5040450, 6720600, 10080900, 20161800]

約数ペア:

[(1, 20161800), (2, 10080900), (3, 6720600), (4, 5040450), (5, 4032360), (6, 3360300), (8, 2520225), (9, 2240200), (10, 2016180), (12, 1680150), (15, 1344120), (18, 1120100), (20, 1008090), (23, 876600), (24, 840075), (25, 806472), (30, 672060), (36, 560050), (40, 504045), (45, 448040), (46, 438300), (50, 403236), (60, 336030), (69, 292200), (72, 280025), (75, 268824), (90, 224020), (92, 219150), (100, 201618), (115, 175320), (120, 168015), (138, 146100), (150, 134412), (180, 112010), (184, 109575), (200, 100809), (207, 97400), (225, 89608), (230, 87660), (276, 73050), (300, 67206), (345, 58440), (360, 56005), (414, 48700), (450, 44804), (460, 43830), (487, 41400), (552, 36525), (575, 35064), (600, 33603), (690, 29220), (828, 24350), (900, 22402), (920, 21915), (974, 20700), (1035, 19480), (1150, 17532), (1380, 14610), (1461, 13800), (1656, 12175), (1725, 11688), (1800, 11201), (1948, 10350), (2070, 9740), (2300, 8766), (2435, 8280), (2760, 7305), (2922, 6900), (3450, 5844), (3896, 5175), (4140, 4870), (4383, 4600)]