21604485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:202

約数の個数: 64

約数和(自身を含む): 41674752

約数和(自身を除く): 20070267

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 67, 83, 105, 111, 185, 201, 249, 259, 335, 415, 469, 555, 581, 777, 1005, 1245, 1295, 1407, 1743, 2345, 2479, 2905, 3071, 3885, 5561, 7035, 7437, 8715, 9213, 12395, 15355, 16683, 17353, 21497, 27805, 37185, 38927, 46065, 52059, 64491, 83415, 86765, 107485, 116781, 194635, 205757, 260295, 322455, 583905, 617271, 1028785, 1440299, 3086355, 4320897, 7201495, 21604485]

約数ペア:

[(1, 21604485), (3, 7201495), (5, 4320897), (7, 3086355), (15, 1440299), (21, 1028785), (35, 617271), (37, 583905), (67, 322455), (83, 260295), (105, 205757), (111, 194635), (185, 116781), (201, 107485), (249, 86765), (259, 83415), (335, 64491), (415, 52059), (469, 46065), (555, 38927), (581, 37185), (777, 27805), (1005, 21497), (1245, 17353), (1295, 16683), (1407, 15355), (1743, 12395), (2345, 9213), (2479, 8715), (2905, 7437), (3071, 7035), (3885, 5561)]