18221955

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 12190845

約数列:

[1, 3, 5, 15, 31, 93, 149, 155, 263, 447, 465, 745, 789, 1315, 2235, 3945, 4619, 8153, 13857, 23095, 24459, 39187, 40765, 69285, 117561, 122295, 195935, 587805, 1214797, 3644391, 6073985, 18221955]

約数ペア:

[(1, 18221955), (3, 6073985), (5, 3644391), (15, 1214797), (31, 587805), (93, 195935), (149, 122295), (155, 117561), (263, 69285), (447, 40765), (465, 39187), (745, 24459), (789, 23095), (1315, 13857), (2235, 8153), (3945, 4619)]