20091000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:242

約数の個数: 128

約数和(自身を含む): 64733760

約数和(自身を除く): 44642760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 37, 40, 50, 60, 74, 75, 100, 111, 120, 125, 148, 150, 181, 185, 200, 222, 250, 296, 300, 362, 370, 375, 444, 500, 543, 555, 600, 724, 740, 750, 888, 905, 925, 1000, 1086, 1110, 1448, 1480, 1500, 1810, 1850, 2172, 2220, 2715, 2775, 3000, 3620, 3700, 4344, 4440, 4525, 4625, 5430, 5550, 6697, 7240, 7400, 9050, 9250, 10860, 11100, 13394, 13575, 13875, 18100, 18500, 20091, 21720, 22200, 22625, 26788, 27150, 27750, 33485, 36200, 37000, 40182, 45250, 53576, 54300, 55500, 66970, 67875, 80364, 90500, 100455, 108600, 111000, 133940, 135750, 160728, 167425, 181000, 200910, 267880, 271500, 334850, 401820, 502275, 543000, 669700, 803640, 837125, 1004550, 1339400, 1674250, 2009100, 2511375, 3348500, 4018200, 5022750, 6697000, 10045500, 20091000]

約数ペア:

[(1, 20091000), (2, 10045500), (3, 6697000), (4, 5022750), (5, 4018200), (6, 3348500), (8, 2511375), (10, 2009100), (12, 1674250), (15, 1339400), (20, 1004550), (24, 837125), (25, 803640), (30, 669700), (37, 543000), (40, 502275), (50, 401820), (60, 334850), (74, 271500), (75, 267880), (100, 200910), (111, 181000), (120, 167425), (125, 160728), (148, 135750), (150, 133940), (181, 111000), (185, 108600), (200, 100455), (222, 90500), (250, 80364), (296, 67875), (300, 66970), (362, 55500), (370, 54300), (375, 53576), (444, 45250), (500, 40182), (543, 37000), (555, 36200), (600, 33485), (724, 27750), (740, 27150), (750, 26788), (888, 22625), (905, 22200), (925, 21720), (1000, 20091), (1086, 18500), (1110, 18100), (1448, 13875), (1480, 13575), (1500, 13394), (1810, 11100), (1850, 10860), (2172, 9250), (2220, 9050), (2715, 7400), (2775, 7240), (3000, 6697), (3620, 5550), (3700, 5430), (4344, 4625), (4440, 4525)]