20856771

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{683}}^1$

素因数の和:737

約数の個数: 40

約数和(自身を含む): 34760880

約数和(自身を除く): 13904109

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 683, 783, 1053, 1131, 2049, 2349, 3393, 6147, 8879, 10179, 18441, 19807, 26637, 30537, 55323, 59421, 79911, 178263, 239733, 257491, 534789, 719199, 772473, 1604367, 2317419, 6952257, 20856771]

約数ペア:

[(1, 20856771), (3, 6952257), (9, 2317419), (13, 1604367), (27, 772473), (29, 719199), (39, 534789), (81, 257491), (87, 239733), (117, 178263), (261, 79911), (351, 59421), (377, 55323), (683, 30537), (783, 26637), (1053, 19807), (1131, 18441), (2049, 10179), (2349, 8879), (3393, 6147)]