1989400

素因数分解:

$2^3\times 5^2\times 7^3\times {\mathrm{29}}^1$

素因数の和:66

約数の個数: 96

約数和(自身を含む): 5580000

約数和(自身を除く): 3590600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 29, 35, 40, 49, 50, 56, 58, 70, 98, 100, 116, 140, 145, 175, 196, 200, 203, 232, 245, 280, 290, 343, 350, 392, 406, 490, 580, 686, 700, 725, 812, 980, 1015, 1160, 1225, 1372, 1400, 1421, 1450, 1624, 1715, 1960, 2030, 2450, 2744, 2842, 2900, 3430, 4060, 4900, 5075, 5684, 5800, 6860, 7105, 8120, 8575, 9800, 9947, 10150, 11368, 13720, 14210, 17150, 19894, 20300, 28420, 34300, 35525, 39788, 40600, 49735, 56840, 68600, 71050, 79576, 99470, 142100, 198940, 248675, 284200, 397880, 497350, 994700, 1989400]

約数ペア:

[(1, 1989400), (2, 994700), (4, 497350), (5, 397880), (7, 284200), (8, 248675), (10, 198940), (14, 142100), (20, 99470), (25, 79576), (28, 71050), (29, 68600), (35, 56840), (40, 49735), (49, 40600), (50, 39788), (56, 35525), (58, 34300), (70, 28420), (98, 20300), (100, 19894), (116, 17150), (140, 14210), (145, 13720), (175, 11368), (196, 10150), (200, 9947), (203, 9800), (232, 8575), (245, 8120), (280, 7105), (290, 6860), (343, 5800), (350, 5684), (392, 5075), (406, 4900), (490, 4060), (580, 3430), (686, 2900), (700, 2842), (725, 2744), (812, 2450), (980, 2030), (1015, 1960), (1160, 1715), (1225, 1624), (1372, 1450), (1400, 1421)]