18897417

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 35741888

約数和(自身を除く): 16844471

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 67, 77, 99, 111, 121, 201, 231, 259, 333, 363, 407, 469, 603, 693, 737, 777, 847, 1089, 1221, 1407, 2211, 2331, 2479, 2541, 2849, 3663, 4221, 4477, 5159, 6633, 7437, 7623, 8107, 8547, 13431, 15477, 17353, 22311, 24321, 25641, 27269, 31339, 40293, 46431, 52059, 56749, 72963, 81807, 94017, 156177, 170247, 190883, 245421, 282051, 299959, 510741, 572649, 899877, 1717947, 2099713, 2699631, 6299139, 18897417]

約数ペア:

[(1, 18897417), (3, 6299139), (7, 2699631), (9, 2099713), (11, 1717947), (21, 899877), (33, 572649), (37, 510741), (63, 299959), (67, 282051), (77, 245421), (99, 190883), (111, 170247), (121, 156177), (201, 94017), (231, 81807), (259, 72963), (333, 56749), (363, 52059), (407, 46431), (469, 40293), (603, 31339), (693, 27269), (737, 25641), (777, 24321), (847, 22311), (1089, 17353), (1221, 15477), (1407, 13431), (2211, 8547), (2331, 8107), (2479, 7623), (2541, 7437), (2849, 6633), (3663, 5159), (4221, 4477)]