20906100

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 180

約数和(自身を含む): 70893900

約数和(自身を除く): 49987800

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 29, 30, 36, 45, 50, 54, 58, 60, 75, 81, 87, 89, 90, 100, 108, 116, 135, 145, 150, 162, 174, 178, 180, 225, 261, 267, 270, 290, 300, 324, 348, 356, 405, 435, 445, 450, 522, 534, 540, 580, 675, 725, 783, 801, 810, 870, 890, 900, 1044, 1068, 1305, 1335, 1350, 1450, 1566, 1602, 1620, 1740, 1780, 2025, 2175, 2225, 2349, 2403, 2581, 2610, 2670, 2700, 2900, 3132, 3204, 3915, 4005, 4050, 4350, 4450, 4698, 4806, 5162, 5220, 5340, 6525, 6675, 7209, 7743, 7830, 8010, 8100, 8700, 8900, 9396, 9612, 10324, 11745, 12015, 12905, 13050, 13350, 14418, 15486, 15660, 16020, 19575, 20025, 23229, 23490, 24030, 25810, 26100, 26700, 28836, 30972, 36045, 38715, 39150, 40050, 46458, 46980, 48060, 51620, 58725, 60075, 64525, 69687, 72090, 77430, 78300, 80100, 92916, 116145, 117450, 120150, 129050, 139374, 144180, 154860, 180225, 193575, 209061, 232290, 234900, 240300, 258100, 278748, 348435, 360450, 387150, 418122, 464580, 580725, 696870, 720900, 774300, 836244, 1045305, 1161450, 1393740, 1742175, 2090610, 2322900, 3484350, 4181220, 5226525, 6968700, 10453050, 20906100]

約数ペア:

[(1, 20906100), (2, 10453050), (3, 6968700), (4, 5226525), (5, 4181220), (6, 3484350), (9, 2322900), (10, 2090610), (12, 1742175), (15, 1393740), (18, 1161450), (20, 1045305), (25, 836244), (27, 774300), (29, 720900), (30, 696870), (36, 580725), (45, 464580), (50, 418122), (54, 387150), (58, 360450), (60, 348435), (75, 278748), (81, 258100), (87, 240300), (89, 234900), (90, 232290), (100, 209061), (108, 193575), (116, 180225), (135, 154860), (145, 144180), (150, 139374), (162, 129050), (174, 120150), (178, 117450), (180, 116145), (225, 92916), (261, 80100), (267, 78300), (270, 77430), (290, 72090), (300, 69687), (324, 64525), (348, 60075), (356, 58725), (405, 51620), (435, 48060), (445, 46980), (450, 46458), (522, 40050), (534, 39150), (540, 38715), (580, 36045), (675, 30972), (725, 28836), (783, 26700), (801, 26100), (810, 25810), (870, 24030), (890, 23490), (900, 23229), (1044, 20025), (1068, 19575), (1305, 16020), (1335, 15660), (1350, 15486), (1450, 14418), (1566, 13350), (1602, 13050), (1620, 12905), (1740, 12015), (1780, 11745), (2025, 10324), (2175, 9612), (2225, 9396), (2349, 8900), (2403, 8700), (2581, 8100), (2610, 8010), (2670, 7830), (2700, 7743), (2900, 7209), (3132, 6675), (3204, 6525), (3915, 5340), (4005, 5220), (4050, 5162), (4350, 4806), (4450, 4698)]