28220425

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2887}}^1$

素因数の和:2937

約数の個数: 24

約数和(自身を含む): 38676096

約数和(自身を除く): 10455671

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 2887, 9775, 14435, 49079, 66401, 72175, 245395, 332005, 1128817, 1226975, 1660025, 5644085, 28220425]

約数ペア:

[(1, 28220425), (5, 5644085), (17, 1660025), (23, 1226975), (25, 1128817), (85, 332005), (115, 245395), (391, 72175), (425, 66401), (575, 49079), (1955, 14435), (2887, 9775)]