81549741

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 139991040

約数和(自身を除く): 58441299

約数列:

[1, 3, 7, 13, 21, 39, 59, 61, 83, 91, 177, 183, 249, 273, 413, 427, 581, 767, 793, 1079, 1239, 1281, 1743, 2301, 2379, 3237, 3599, 4897, 5063, 5369, 5551, 7553, 10797, 14691, 15189, 16107, 16653, 22659, 25193, 34279, 35441, 46787, 63661, 65819, 75579, 102837, 106323, 140361, 190983, 197457, 298717, 327509, 445627, 460733, 896151, 982527, 1336881, 1382199, 2091019, 3883321, 6273057, 11649963, 27183247, 81549741]

約数ペア:

[(1, 81549741), (3, 27183247), (7, 11649963), (13, 6273057), (21, 3883321), (39, 2091019), (59, 1382199), (61, 1336881), (83, 982527), (91, 896151), (177, 460733), (183, 445627), (249, 327509), (273, 298717), (413, 197457), (427, 190983), (581, 140361), (767, 106323), (793, 102837), (1079, 75579), (1239, 65819), (1281, 63661), (1743, 46787), (2301, 35441), (2379, 34279), (3237, 25193), (3599, 22659), (4897, 16653), (5063, 16107), (5369, 15189), (5551, 14691), (7553, 10797)]