21874671

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:365

約数の個数: 64

約数和(自身を含む): 41395200

約数和(自身を除く): 19520529

約数列:

[1, 3, 7, 9, 13, 21, 27, 29, 39, 63, 87, 91, 117, 189, 203, 261, 273, 307, 351, 377, 609, 783, 819, 921, 1131, 1827, 2149, 2457, 2639, 2763, 3393, 3991, 5481, 6447, 7917, 8289, 8903, 10179, 11973, 19341, 23751, 26709, 27937, 35919, 58023, 62321, 71253, 80127, 83811, 107757, 115739, 186963, 240381, 251433, 347217, 560889, 754299, 810173, 1041651, 1682667, 2430519, 3124953, 7291557, 21874671]

約数ペア:

[(1, 21874671), (3, 7291557), (7, 3124953), (9, 2430519), (13, 1682667), (21, 1041651), (27, 810173), (29, 754299), (39, 560889), (63, 347217), (87, 251433), (91, 240381), (117, 186963), (189, 115739), (203, 107757), (261, 83811), (273, 80127), (307, 71253), (351, 62321), (377, 58023), (609, 35919), (783, 27937), (819, 26709), (921, 23751), (1131, 19341), (1827, 11973), (2149, 10179), (2457, 8903), (2639, 8289), (2763, 7917), (3393, 6447), (3991, 5481)]