205744980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{489869}}^1$

素因数の和:489888

約数の個数: 48

約数和(自身を含む): 658385280

約数和(自身を除く): 452640300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 489869, 979738, 1469607, 1959476, 2449345, 2939214, 3429083, 4898690, 5878428, 6858166, 7348035, 9797380, 10287249, 13716332, 14696070, 17145415, 20574498, 29392140, 34290830, 41148996, 51436245, 68581660, 102872490, 205744980]

約数ペア:

[(1, 205744980), (2, 102872490), (3, 68581660), (4, 51436245), (5, 41148996), (6, 34290830), (7, 29392140), (10, 20574498), (12, 17145415), (14, 14696070), (15, 13716332), (20, 10287249), (21, 9797380), (28, 7348035), (30, 6858166), (35, 5878428), (42, 4898690), (60, 3429083), (70, 2939214), (84, 2449345), (105, 1959476), (140, 1469607), (210, 979738), (420, 489869)]