18828005

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:154

約数の個数: 48

約数和(自身を含む): 28279296

約数和(自身を除く): 9451291

約数列:

[1, 5, 7, 31, 35, 37, 49, 67, 155, 185, 217, 245, 259, 335, 469, 1085, 1147, 1295, 1519, 1813, 2077, 2345, 2479, 3283, 5735, 7595, 8029, 9065, 10385, 12395, 14539, 16415, 17353, 40145, 56203, 72695, 76849, 86765, 101773, 121471, 281015, 384245, 508865, 537943, 607355, 2689715, 3765601, 18828005]

約数ペア:

[(1, 18828005), (5, 3765601), (7, 2689715), (31, 607355), (35, 537943), (37, 508865), (49, 384245), (67, 281015), (155, 121471), (185, 101773), (217, 86765), (245, 76849), (259, 72695), (335, 56203), (469, 40145), (1085, 17353), (1147, 16415), (1295, 14539), (1519, 12395), (1813, 10385), (2077, 9065), (2345, 8029), (2479, 7595), (3283, 5735)]