21895368

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 60160320

約数和(自身を除く): 38264952

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 197, 264, 394, 421, 591, 788, 842, 1182, 1263, 1576, 1684, 2167, 2364, 2526, 3368, 4334, 4631, 4728, 5052, 6501, 8668, 9262, 10104, 13002, 13893, 17336, 18524, 26004, 27786, 37048, 52008, 55572, 82937, 111144, 165874, 248811, 331748, 497622, 663496, 912307, 995244, 1824614, 1990488, 2736921, 3649228, 5473842, 7298456, 10947684, 21895368]

約数ペア:

[(1, 21895368), (2, 10947684), (3, 7298456), (4, 5473842), (6, 3649228), (8, 2736921), (11, 1990488), (12, 1824614), (22, 995244), (24, 912307), (33, 663496), (44, 497622), (66, 331748), (88, 248811), (132, 165874), (197, 111144), (264, 82937), (394, 55572), (421, 52008), (591, 37048), (788, 27786), (842, 26004), (1182, 18524), (1263, 17336), (1576, 13893), (1684, 13002), (2167, 10104), (2364, 9262), (2526, 8668), (3368, 6501), (4334, 5052), (4631, 4728)]