21560960

素因数分解:

$2^7\times 5^1\times {\mathrm{59}}^1\times {\mathrm{571}}^1$

素因数の和:649

約数の個数: 64

約数和(自身を含む): 52509600

約数和(自身を除く): 30948640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 295, 320, 472, 571, 590, 640, 944, 1142, 1180, 1888, 2284, 2360, 2855, 3776, 4568, 4720, 5710, 7552, 9136, 9440, 11420, 18272, 18880, 22840, 33689, 36544, 37760, 45680, 67378, 73088, 91360, 134756, 168445, 182720, 269512, 336890, 365440, 539024, 673780, 1078048, 1347560, 2156096, 2695120, 4312192, 5390240, 10780480, 21560960]

約数ペア:

[(1, 21560960), (2, 10780480), (4, 5390240), (5, 4312192), (8, 2695120), (10, 2156096), (16, 1347560), (20, 1078048), (32, 673780), (40, 539024), (59, 365440), (64, 336890), (80, 269512), (118, 182720), (128, 168445), (160, 134756), (236, 91360), (295, 73088), (320, 67378), (472, 45680), (571, 37760), (590, 36544), (640, 33689), (944, 22840), (1142, 18880), (1180, 18272), (1888, 11420), (2284, 9440), (2360, 9136), (2855, 7552), (3776, 5710), (4568, 4720)]