2154040

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{157}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 5688000

約数和(自身を除く): 3533960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 157, 196, 245, 280, 314, 343, 392, 490, 628, 686, 785, 980, 1099, 1256, 1372, 1570, 1715, 1960, 2198, 2744, 3140, 3430, 4396, 5495, 6280, 6860, 7693, 8792, 10990, 13720, 15386, 21980, 30772, 38465, 43960, 53851, 61544, 76930, 107702, 153860, 215404, 269255, 307720, 430808, 538510, 1077020, 2154040]

約数ペア:

[(1, 2154040), (2, 1077020), (4, 538510), (5, 430808), (7, 307720), (8, 269255), (10, 215404), (14, 153860), (20, 107702), (28, 76930), (35, 61544), (40, 53851), (49, 43960), (56, 38465), (70, 30772), (98, 21980), (140, 15386), (157, 13720), (196, 10990), (245, 8792), (280, 7693), (314, 6860), (343, 6280), (392, 5495), (490, 4396), (628, 3430), (686, 3140), (785, 2744), (980, 2198), (1099, 1960), (1256, 1715), (1372, 1570)]