20442800

素因数分解:

$2^4\times 5^2\times 7^3\times {\mathrm{149}}^1$

素因数の和:188

約数の個数: 120

約数和(自身を含む): 57660000

約数和(自身を除く): 37217200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 149, 175, 196, 200, 245, 280, 298, 343, 350, 392, 400, 490, 560, 596, 686, 700, 745, 784, 980, 1043, 1192, 1225, 1372, 1400, 1490, 1715, 1960, 2086, 2384, 2450, 2744, 2800, 2980, 3430, 3725, 3920, 4172, 4900, 5215, 5488, 5960, 6860, 7301, 7450, 8344, 8575, 9800, 10430, 11920, 13720, 14602, 14900, 16688, 17150, 19600, 20860, 26075, 27440, 29204, 29800, 34300, 36505, 41720, 51107, 52150, 58408, 59600, 68600, 73010, 83440, 102214, 104300, 116816, 137200, 146020, 182525, 204428, 208600, 255535, 292040, 365050, 408856, 417200, 511070, 584080, 730100, 817712, 1022140, 1277675, 1460200, 2044280, 2555350, 2920400, 4088560, 5110700, 10221400, 20442800]

約数ペア:

[(1, 20442800), (2, 10221400), (4, 5110700), (5, 4088560), (7, 2920400), (8, 2555350), (10, 2044280), (14, 1460200), (16, 1277675), (20, 1022140), (25, 817712), (28, 730100), (35, 584080), (40, 511070), (49, 417200), (50, 408856), (56, 365050), (70, 292040), (80, 255535), (98, 208600), (100, 204428), (112, 182525), (140, 146020), (149, 137200), (175, 116816), (196, 104300), (200, 102214), (245, 83440), (280, 73010), (298, 68600), (343, 59600), (350, 58408), (392, 52150), (400, 51107), (490, 41720), (560, 36505), (596, 34300), (686, 29800), (700, 29204), (745, 27440), (784, 26075), (980, 20860), (1043, 19600), (1192, 17150), (1225, 16688), (1372, 14900), (1400, 14602), (1490, 13720), (1715, 11920), (1960, 10430), (2086, 9800), (2384, 8575), (2450, 8344), (2744, 7450), (2800, 7301), (2980, 6860), (3430, 5960), (3725, 5488), (3920, 5215), (4172, 4900)]