20372100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 144

約数和(自身を含む): 68745600

約数和(自身を除く): 48373500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 89, 100, 105, 109, 140, 150, 175, 178, 210, 218, 267, 300, 327, 350, 356, 420, 436, 445, 525, 534, 545, 623, 654, 700, 763, 890, 1050, 1068, 1090, 1246, 1308, 1335, 1526, 1635, 1780, 1869, 2100, 2180, 2225, 2289, 2492, 2670, 2725, 3052, 3115, 3270, 3738, 3815, 4450, 4578, 5340, 5450, 6230, 6540, 6675, 7476, 7630, 8175, 8900, 9156, 9345, 9701, 10900, 11445, 12460, 13350, 15260, 15575, 16350, 18690, 19075, 19402, 22890, 26700, 29103, 31150, 32700, 37380, 38150, 38804, 45780, 46725, 48505, 57225, 58206, 62300, 67907, 76300, 93450, 97010, 114450, 116412, 135814, 145515, 186900, 194020, 203721, 228900, 242525, 271628, 291030, 339535, 407442, 485050, 582060, 679070, 727575, 814884, 970100, 1018605, 1358140, 1455150, 1697675, 2037210, 2910300, 3395350, 4074420, 5093025, 6790700, 10186050, 20372100]

約数ペア:

[(1, 20372100), (2, 10186050), (3, 6790700), (4, 5093025), (5, 4074420), (6, 3395350), (7, 2910300), (10, 2037210), (12, 1697675), (14, 1455150), (15, 1358140), (20, 1018605), (21, 970100), (25, 814884), (28, 727575), (30, 679070), (35, 582060), (42, 485050), (50, 407442), (60, 339535), (70, 291030), (75, 271628), (84, 242525), (89, 228900), (100, 203721), (105, 194020), (109, 186900), (140, 145515), (150, 135814), (175, 116412), (178, 114450), (210, 97010), (218, 93450), (267, 76300), (300, 67907), (327, 62300), (350, 58206), (356, 57225), (420, 48505), (436, 46725), (445, 45780), (525, 38804), (534, 38150), (545, 37380), (623, 32700), (654, 31150), (700, 29103), (763, 26700), (890, 22890), (1050, 19402), (1068, 19075), (1090, 18690), (1246, 16350), (1308, 15575), (1335, 15260), (1526, 13350), (1635, 12460), (1780, 11445), (1869, 10900), (2100, 9701), (2180, 9345), (2225, 9156), (2289, 8900), (2492, 8175), (2670, 7630), (2725, 7476), (3052, 6675), (3115, 6540), (3270, 6230), (3738, 5450), (3815, 5340), (4450, 4578)]