21708160

素因数分解:

$2^7\times 5^1\times {\mathrm{107}}^1\times {\mathrm{317}}^1$

素因数の和:443

約数の個数: 64

約数和(自身を含む): 52546320

約数和(自身を除く): 30838160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 160, 214, 317, 320, 428, 535, 634, 640, 856, 1070, 1268, 1585, 1712, 2140, 2536, 3170, 3424, 4280, 5072, 6340, 6848, 8560, 10144, 12680, 13696, 17120, 20288, 25360, 33919, 34240, 40576, 50720, 67838, 68480, 101440, 135676, 169595, 202880, 271352, 339190, 542704, 678380, 1085408, 1356760, 2170816, 2713520, 4341632, 5427040, 10854080, 21708160]

約数ペア:

[(1, 21708160), (2, 10854080), (4, 5427040), (5, 4341632), (8, 2713520), (10, 2170816), (16, 1356760), (20, 1085408), (32, 678380), (40, 542704), (64, 339190), (80, 271352), (107, 202880), (128, 169595), (160, 135676), (214, 101440), (317, 68480), (320, 67838), (428, 50720), (535, 40576), (634, 34240), (640, 33919), (856, 25360), (1070, 20288), (1268, 17120), (1585, 13696), (1712, 12680), (2140, 10144), (2536, 8560), (3170, 6848), (3424, 6340), (4280, 5072)]