256818800

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{13103}}^1$

素因数の和:13135

約数の個数: 90

約数和(自身を含む): 717797808

約数和(自身を除く): 460979008

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, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4900, 9800, 13103, 19600, 26206, 52412, 65515, 91721, 104824, 131030, 183442, 209648, 262060, 327575, 366884, 458605, 524120, 642047, 655150, 733768, 917210, 1048240, 1284094, 1310300, 1467536, 1834420, 2293025, 2568188, 2620600, 3210235, 3668840, 4586050, 5136376, 5241200, 6420470, 7337680, 9172100, 10272752, 12840940, 16051175, 18344200, 25681880, 32102350, 36688400, 51363760, 64204700, 128409400, 256818800]

約数ペア:

[(1, 256818800), (2, 128409400), (4, 64204700), (5, 51363760), (7, 36688400), (8, 32102350), (10, 25681880), (14, 18344200), (16, 16051175), (20, 12840940), (25, 10272752), (28, 9172100), (35, 7337680), (40, 6420470), (49, 5241200), (50, 5136376), (56, 4586050), (70, 3668840), (80, 3210235), (98, 2620600), (100, 2568188), (112, 2293025), (140, 1834420), (175, 1467536), (196, 1310300), (200, 1284094), (245, 1048240), (280, 917210), (350, 733768), (392, 655150), (400, 642047), (490, 524120), (560, 458605), (700, 366884), (784, 327575), (980, 262060), (1225, 209648), (1400, 183442), (1960, 131030), (2450, 104824), (2800, 91721), (3920, 65515), (4900, 52412), (9800, 26206), (13103, 19600)]