20545280

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2293}}^1$

素因数の和:2321

約数の個数: 72

約数和(自身を含む): 56267232

約数和(自身を除く): 35721952

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, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 2293, 4480, 4586, 8960, 9172, 11465, 16051, 18344, 22930, 32102, 36688, 45860, 64204, 73376, 80255, 91720, 128408, 146752, 160510, 183440, 256816, 293504, 321020, 366880, 513632, 587008, 642040, 733760, 1027264, 1284080, 1467520, 2054528, 2568160, 2935040, 4109056, 5136320, 10272640, 20545280]

約数ペア:

[(1, 20545280), (2, 10272640), (4, 5136320), (5, 4109056), (7, 2935040), (8, 2568160), (10, 2054528), (14, 1467520), (16, 1284080), (20, 1027264), (28, 733760), (32, 642040), (35, 587008), (40, 513632), (56, 366880), (64, 321020), (70, 293504), (80, 256816), (112, 183440), (128, 160510), (140, 146752), (160, 128408), (224, 91720), (256, 80255), (280, 73376), (320, 64204), (448, 45860), (560, 36688), (640, 32102), (896, 22930), (1120, 18344), (1280, 16051), (1792, 11465), (2240, 9172), (2293, 8960), (4480, 4586)]