18861165

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 34398000

約数和(自身を除く): 15536835

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 97, 145, 149, 261, 291, 435, 447, 485, 745, 873, 1305, 1341, 1455, 2235, 2813, 4321, 4365, 6705, 8439, 12963, 14065, 14453, 21605, 25317, 38889, 42195, 43359, 64815, 72265, 126585, 130077, 194445, 216795, 419137, 650385, 1257411, 2095685, 3772233, 6287055, 18861165]

約数ペア:

[(1, 18861165), (3, 6287055), (5, 3772233), (9, 2095685), (15, 1257411), (29, 650385), (45, 419137), (87, 216795), (97, 194445), (145, 130077), (149, 126585), (261, 72265), (291, 64815), (435, 43359), (447, 42195), (485, 38889), (745, 25317), (873, 21605), (1305, 14453), (1341, 14065), (1455, 12963), (2235, 8439), (2813, 6705), (4321, 4365)]