220864515

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 385191936

約数和(自身を除く): 164327421

約数列:

[1, 3, 5, 15, 23, 47, 53, 69, 115, 141, 159, 235, 257, 265, 345, 705, 771, 795, 1081, 1219, 1285, 2491, 3243, 3657, 3855, 5405, 5911, 6095, 7473, 12079, 12455, 13621, 16215, 17733, 18285, 29555, 36237, 37365, 40863, 57293, 60395, 68105, 88665, 171879, 181185, 204315, 277817, 286465, 313283, 640187, 833451, 859395, 939849, 1389085, 1566415, 1920561, 3200935, 4167255, 4699245, 9602805, 14724301, 44172903, 73621505, 220864515]

約数ペア:

[(1, 220864515), (3, 73621505), (5, 44172903), (15, 14724301), (23, 9602805), (47, 4699245), (53, 4167255), (69, 3200935), (115, 1920561), (141, 1566415), (159, 1389085), (235, 939849), (257, 859395), (265, 833451), (345, 640187), (705, 313283), (771, 286465), (795, 277817), (1081, 204315), (1219, 181185), (1285, 171879), (2491, 88665), (3243, 68105), (3657, 60395), (3855, 57293), (5405, 40863), (5911, 37365), (6095, 36237), (7473, 29555), (12079, 18285), (12455, 17733), (13621, 16215)]