247721031

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:517

約数の個数: 64

約数和(自身を含む): 410521600

約数和(自身を除く): 162800569

約数列:

[1, 3, 9, 19, 27, 31, 37, 57, 93, 111, 171, 279, 333, 421, 513, 589, 703, 837, 999, 1147, 1263, 1767, 2109, 3441, 3789, 5301, 6327, 7999, 10323, 11367, 13051, 15577, 15903, 18981, 21793, 23997, 30969, 39153, 46731, 65379, 71991, 117459, 140193, 196137, 215973, 247969, 295963, 352377, 420579, 482887, 588411, 743907, 887889, 1448661, 2231721, 2663667, 4345983, 6695163, 7991001, 9174853, 13037949, 27524559, 82573677, 247721031]

約数ペア:

[(1, 247721031), (3, 82573677), (9, 27524559), (19, 13037949), (27, 9174853), (31, 7991001), (37, 6695163), (57, 4345983), (93, 2663667), (111, 2231721), (171, 1448661), (279, 887889), (333, 743907), (421, 588411), (513, 482887), (589, 420579), (703, 352377), (837, 295963), (999, 247969), (1147, 215973), (1263, 196137), (1767, 140193), (2109, 117459), (3441, 71991), (3789, 65379), (5301, 46731), (6327, 39153), (7999, 30969), (10323, 23997), (11367, 21793), (13051, 18981), (15577, 15903)]