646401.00000000

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 107008000

約数和(自身を除く): 46791277

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 79, 109, 111, 189, 237, 259, 327, 333, 553, 711, 763, 777, 981, 999, 1659, 2133, 2289, 2331, 2923, 2943, 4033, 4977, 6867, 6993, 8611, 8769, 12099, 14931, 20461, 20601, 25833, 26307, 28231, 36297, 60277, 61383, 77499, 78921, 84693, 108891, 180831, 184149, 232497, 254079, 318607, 542493, 552447, 762237, 955821, 1627479, 2230249, 2867463, 6690747, 8602389, 20072241, 60216723]

約数ペア:

[(1, 60216723), (3, 20072241), (7, 8602389), (9, 6690747), (21, 2867463), (27, 2230249), (37, 1627479), (63, 955821), (79, 762237), (109, 552447), (111, 542493), (189, 318607), (237, 254079), (259, 232497), (327, 184149), (333, 180831), (553, 108891), (711, 84693), (763, 78921), (777, 77499), (981, 61383), (999, 60277), (1659, 36297), (2133, 28231), (2289, 26307), (2331, 25833), (2923, 20601), (2943, 20461), (4033, 14931), (4977, 12099), (6867, 8769), (6993, 8611)]