21328008

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{347}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 57879360

約数和(自身を除く): 36551352

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 197, 312, 347, 394, 591, 694, 788, 1041, 1182, 1388, 1576, 2082, 2364, 2561, 2776, 4164, 4511, 4728, 5122, 7683, 8328, 9022, 10244, 13533, 15366, 18044, 20488, 27066, 30732, 36088, 54132, 61464, 68359, 108264, 136718, 205077, 273436, 410154, 546872, 820308, 888667, 1640616, 1777334, 2666001, 3554668, 5332002, 7109336, 10664004, 21328008]

約数ペア:

[(1, 21328008), (2, 10664004), (3, 7109336), (4, 5332002), (6, 3554668), (8, 2666001), (12, 1777334), (13, 1640616), (24, 888667), (26, 820308), (39, 546872), (52, 410154), (78, 273436), (104, 205077), (156, 136718), (197, 108264), (312, 68359), (347, 61464), (394, 54132), (591, 36088), (694, 30732), (788, 27066), (1041, 20488), (1182, 18044), (1388, 15366), (1576, 13533), (2082, 10244), (2364, 9022), (2561, 8328), (2776, 7683), (4164, 5122), (4511, 4728)]