18253235

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 29992032

約数和(自身を除く): 11738797

約数列:

[1, 5, 7, 11, 13, 35, 49, 55, 65, 77, 91, 143, 245, 385, 455, 521, 539, 637, 715, 1001, 2605, 2695, 3185, 3647, 5005, 5731, 6773, 7007, 18235, 25529, 28655, 33865, 35035, 40117, 47411, 74503, 127645, 200585, 237055, 280819, 331877, 372515, 521521, 1404095, 1659385, 2607605, 3650647, 18253235]

約数ペア:

[(1, 18253235), (5, 3650647), (7, 2607605), (11, 1659385), (13, 1404095), (35, 521521), (49, 372515), (55, 331877), (65, 280819), (77, 237055), (91, 200585), (143, 127645), (245, 74503), (385, 47411), (455, 40117), (521, 35035), (539, 33865), (637, 28655), (715, 25529), (1001, 18235), (2605, 7007), (2695, 6773), (3185, 5731), (3647, 5005)]