1991231172

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{2351}}^1\times {\mathrm{3361}}^1$

素因数の和:5729

約数の個数: 72

約数和(自身を含む): 5756604672

約数和(自身を除く): 3765373500

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 2351, 3361, 4702, 6722, 7053, 9404, 10083, 13444, 14106, 16457, 20166, 21159, 23527, 28212, 30249, 32914, 40332, 42318, 47054, 49371, 60498, 65828, 70581, 84636, 94108, 98742, 120996, 141162, 148113, 197484, 211743, 282324, 296226, 423486, 592452, 846972, 7901711, 15803422, 23705133, 31606844, 47410266, 55311977, 71115399, 94820532, 110623954, 142230798, 165935931, 221247908, 284461596, 331871862, 497807793, 663743724, 995615586, 1991231172]

約数ペア:

[(1, 1991231172), (2, 995615586), (3, 663743724), (4, 497807793), (6, 331871862), (7, 284461596), (9, 221247908), (12, 165935931), (14, 142230798), (18, 110623954), (21, 94820532), (28, 71115399), (36, 55311977), (42, 47410266), (63, 31606844), (84, 23705133), (126, 15803422), (252, 7901711), (2351, 846972), (3361, 592452), (4702, 423486), (6722, 296226), (7053, 282324), (9404, 211743), (10083, 197484), (13444, 148113), (14106, 141162), (16457, 120996), (20166, 98742), (21159, 94108), (23527, 84636), (28212, 70581), (30249, 65828), (32914, 60498), (40332, 49371), (42318, 47054)]