81563391

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 151626384

約数和(自身を除く): 70062993

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 49, 63, 91, 117, 123, 147, 273, 287, 347, 369, 441, 533, 637, 819, 861, 1041, 1599, 1911, 2009, 2429, 2583, 3123, 3731, 4511, 4797, 5733, 6027, 7287, 11193, 13533, 14227, 17003, 18081, 21861, 26117, 31577, 33579, 40599, 42681, 51009, 78351, 94731, 99589, 128043, 153027, 184951, 221039, 235053, 284193, 298767, 554853, 663117, 697123, 896301, 1294657, 1664559, 1989351, 2091369, 3883971, 6274107, 9062599, 11651913, 27187797, 81563391]

約数ペア:

[(1, 81563391), (3, 27187797), (7, 11651913), (9, 9062599), (13, 6274107), (21, 3883971), (39, 2091369), (41, 1989351), (49, 1664559), (63, 1294657), (91, 896301), (117, 697123), (123, 663117), (147, 554853), (273, 298767), (287, 284193), (347, 235053), (369, 221039), (441, 184951), (533, 153027), (637, 128043), (819, 99589), (861, 94731), (1041, 78351), (1599, 51009), (1911, 42681), (2009, 40599), (2429, 33579), (2583, 31577), (3123, 26117), (3731, 21861), (4511, 18081), (4797, 17003), (5733, 14227), (6027, 13533), (7287, 11193)]