20775339

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 34696800

約数和(自身を除く): 13921461

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 157, 169, 261, 351, 377, 471, 507, 783, 1131, 1413, 1521, 2041, 3393, 4239, 4553, 4563, 4901, 6123, 10179, 13659, 14703, 18369, 26533, 40977, 44109, 55107, 59189, 79599, 122931, 132327, 177567, 238797, 532701, 716391, 769457, 1598103, 2308371, 6925113, 20775339]

約数ペア:

[(1, 20775339), (3, 6925113), (9, 2308371), (13, 1598103), (27, 769457), (29, 716391), (39, 532701), (87, 238797), (117, 177567), (157, 132327), (169, 122931), (261, 79599), (351, 59189), (377, 55107), (471, 44109), (507, 40977), (783, 26533), (1131, 18369), (1413, 14703), (1521, 13659), (2041, 10179), (3393, 6123), (4239, 4901), (4553, 4563)]