21536040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{911}}^1$

素因数の和:1122

約数の個数: 64

約数和(自身を含む): 65007360

約数和(自身を除く): 43471320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 197, 394, 591, 788, 911, 985, 1182, 1576, 1822, 1970, 2364, 2733, 2955, 3644, 3940, 4555, 4728, 5466, 5910, 7288, 7880, 9110, 10932, 11820, 13665, 18220, 21864, 23640, 27330, 36440, 54660, 109320, 179467, 358934, 538401, 717868, 897335, 1076802, 1435736, 1794670, 2153604, 2692005, 3589340, 4307208, 5384010, 7178680, 10768020, 21536040]

約数ペア:

[(1, 21536040), (2, 10768020), (3, 7178680), (4, 5384010), (5, 4307208), (6, 3589340), (8, 2692005), (10, 2153604), (12, 1794670), (15, 1435736), (20, 1076802), (24, 897335), (30, 717868), (40, 538401), (60, 358934), (120, 179467), (197, 109320), (394, 54660), (591, 36440), (788, 27330), (911, 23640), (985, 21864), (1182, 18220), (1576, 13665), (1822, 11820), (1970, 10932), (2364, 9110), (2733, 7880), (2955, 7288), (3644, 5910), (3940, 5466), (4555, 4728)]