81278764

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{503}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 169344000

約数和(自身を除く): 88065236

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 199, 203, 398, 406, 503, 796, 812, 1006, 1393, 2012, 2786, 3521, 5572, 5771, 7042, 11542, 14084, 14587, 23084, 29174, 40397, 58348, 80794, 100097, 102109, 161588, 200194, 204218, 400388, 408436, 700679, 1401358, 2802716, 2902813, 5805626, 11611252, 20319691, 40639382, 81278764]

約数ペア:

[(1, 81278764), (2, 40639382), (4, 20319691), (7, 11611252), (14, 5805626), (28, 2902813), (29, 2802716), (58, 1401358), (116, 700679), (199, 408436), (203, 400388), (398, 204218), (406, 200194), (503, 161588), (796, 102109), (812, 100097), (1006, 80794), (1393, 58348), (2012, 40397), (2786, 29174), (3521, 23084), (5572, 14587), (5771, 14084), (7042, 11542)]