389979520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{87049}}^1$

素因数の和:87075

約数の個数: 64

約数和(自身を含む): 1065492000

約数和(自身を除く): 675512480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 87049, 174098, 348196, 435245, 609343, 696392, 870490, 1218686, 1392784, 1740980, 2437372, 2785568, 3046715, 3481960, 4874744, 5571136, 6093430, 6963920, 9749488, 11142272, 12186860, 13927840, 19498976, 24373720, 27855680, 38997952, 48747440, 55711360, 77995904, 97494880, 194989760, 389979520]

約数ペア:

[(1, 389979520), (2, 194989760), (4, 97494880), (5, 77995904), (7, 55711360), (8, 48747440), (10, 38997952), (14, 27855680), (16, 24373720), (20, 19498976), (28, 13927840), (32, 12186860), (35, 11142272), (40, 9749488), (56, 6963920), (64, 6093430), (70, 5571136), (80, 4874744), (112, 3481960), (128, 3046715), (140, 2785568), (160, 2437372), (224, 1740980), (280, 1392784), (320, 1218686), (448, 870490), (560, 696392), (640, 609343), (896, 435245), (1120, 348196), (2240, 174098), (4480, 87049)]