18387005

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 28957824

約数和(自身を除く): 10570819

約数列:

[1, 5, 7, 13, 23, 35, 49, 65, 91, 115, 161, 245, 251, 299, 455, 637, 805, 1127, 1255, 1495, 1757, 2093, 3185, 3263, 5635, 5773, 8785, 10465, 12299, 14651, 16315, 22841, 28865, 40411, 61495, 73255, 75049, 114205, 159887, 202055, 282877, 375245, 525343, 799435, 1414385, 2626715, 3677401, 18387005]

約数ペア:

[(1, 18387005), (5, 3677401), (7, 2626715), (13, 1414385), (23, 799435), (35, 525343), (49, 375245), (65, 282877), (91, 202055), (115, 159887), (161, 114205), (245, 75049), (251, 73255), (299, 61495), (455, 40411), (637, 28865), (805, 22841), (1127, 16315), (1255, 14651), (1495, 12299), (1757, 10465), (2093, 8785), (3185, 5773), (3263, 5635)]