21303156819

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1\times {\mathrm{661}}^1$

素因数の和:1052

約数の個数: 64

約数和(自身を含む): 33465635840

約数和(自身を除く): 12162479021

約数列:

[1, 3, 7, 21, 61, 139, 181, 183, 417, 427, 543, 661, 973, 1267, 1281, 1983, 2919, 3801, 4627, 8479, 11041, 13881, 25159, 25437, 33123, 40321, 59353, 75477, 77287, 91879, 119641, 120963, 176113, 178059, 231861, 275637, 282247, 358923, 528339, 643153, 837487, 846741, 1534699, 1929459, 2512461, 4604097, 5604619, 7298101, 10742893, 16630099, 16813857, 21894303, 32228679, 39232333, 49890297, 51086707, 116410693, 117696999, 153260121, 349232079, 1014436039, 3043308117, 7101052273, 21303156819]

約数ペア:

[(1, 21303156819), (3, 7101052273), (7, 3043308117), (21, 1014436039), (61, 349232079), (139, 153260121), (181, 117696999), (183, 116410693), (417, 51086707), (427, 49890297), (543, 39232333), (661, 32228679), (973, 21894303), (1267, 16813857), (1281, 16630099), (1983, 10742893), (2919, 7298101), (3801, 5604619), (4627, 4604097), (8479, 2512461), (11041, 1929459), (13881, 1534699), (25159, 846741), (25437, 837487), (33123, 643153), (40321, 528339), (59353, 358923), (75477, 282247), (77287, 275637), (91879, 231861), (119641, 178059), (120963, 176113)]