21989583

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1511}}^1$

素因数の和:1545

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19378737

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 297, 441, 539, 693, 1323, 1511, 1617, 2079, 4533, 4851, 10577, 13599, 14553, 16621, 31731, 40797, 49863, 74039, 95193, 116347, 149589, 222117, 285579, 349041, 448767, 666351, 814429, 1047123, 1999053, 2443287, 3141369, 7329861, 21989583]

約数ペア:

[(1, 21989583), (3, 7329861), (7, 3141369), (9, 2443287), (11, 1999053), (21, 1047123), (27, 814429), (33, 666351), (49, 448767), (63, 349041), (77, 285579), (99, 222117), (147, 149589), (189, 116347), (231, 95193), (297, 74039), (441, 49863), (539, 40797), (693, 31731), (1323, 16621), (1511, 14553), (1617, 13599), (2079, 10577), (4533, 4851)]