20091204

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1307}}^1$

素因数の和:1385

約数の個数: 72

約数和(自身を含む): 59037888

約数和(自身を除く): 38946684

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1281, 1307, 1708, 2196, 2562, 2614, 3843, 3921, 5124, 5228, 7686, 7842, 9149, 11763, 15372, 15684, 18298, 23526, 27447, 36596, 47052, 54894, 79727, 82341, 109788, 159454, 164682, 239181, 318908, 329364, 478362, 558089, 717543, 956724, 1116178, 1435086, 1674267, 2232356, 2870172, 3348534, 5022801, 6697068, 10045602, 20091204]

約数ペア:

[(1, 20091204), (2, 10045602), (3, 6697068), (4, 5022801), (6, 3348534), (7, 2870172), (9, 2232356), (12, 1674267), (14, 1435086), (18, 1116178), (21, 956724), (28, 717543), (36, 558089), (42, 478362), (61, 329364), (63, 318908), (84, 239181), (122, 164682), (126, 159454), (183, 109788), (244, 82341), (252, 79727), (366, 54894), (427, 47052), (549, 36596), (732, 27447), (854, 23526), (1098, 18298), (1281, 15684), (1307, 15372), (1708, 11763), (2196, 9149), (2562, 7842), (2614, 7686), (3843, 5228), (3921, 5124)]