821130505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 1172102400

約数和(自身を除く): 350971895

約数列:

[1, 5, 13, 19, 29, 65, 95, 101, 145, 227, 247, 377, 505, 551, 1135, 1235, 1313, 1885, 1919, 2755, 2929, 2951, 4313, 6565, 6583, 7163, 9595, 14645, 14755, 21565, 22927, 24947, 32915, 35815, 38077, 55651, 56069, 85579, 114635, 124735, 125077, 190385, 278255, 280345, 298051, 427895, 435613, 625385, 664883, 723463, 1490255, 1626001, 2178065, 3324415, 3617315, 5662969, 8130005, 8643479, 12632777, 28314845, 43217395, 63163885, 164226101, 821130505]

約数ペア:

[(1, 821130505), (5, 164226101), (13, 63163885), (19, 43217395), (29, 28314845), (65, 12632777), (95, 8643479), (101, 8130005), (145, 5662969), (227, 3617315), (247, 3324415), (377, 2178065), (505, 1626001), (551, 1490255), (1135, 723463), (1235, 664883), (1313, 625385), (1885, 435613), (1919, 427895), (2755, 298051), (2929, 280345), (2951, 278255), (4313, 190385), (6565, 125077), (6583, 124735), (7163, 114635), (9595, 85579), (14645, 56069), (14755, 55651), (21565, 38077), (22927, 35815), (24947, 32915)]