18195905

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 28440720

約数和(自身を除く): 10244815

約数列:

[1, 5, 7, 13, 29, 35, 49, 65, 91, 145, 197, 203, 245, 377, 455, 637, 985, 1015, 1379, 1421, 1885, 2561, 2639, 3185, 5713, 6895, 7105, 9653, 12805, 13195, 17927, 18473, 28565, 39991, 48265, 74269, 89635, 92365, 125489, 199955, 279937, 371345, 519883, 627445, 1399685, 2599415, 3639181, 18195905]

約数ペア:

[(1, 18195905), (5, 3639181), (7, 2599415), (13, 1399685), (29, 627445), (35, 519883), (49, 371345), (65, 279937), (91, 199955), (145, 125489), (197, 92365), (203, 89635), (245, 74269), (377, 48265), (455, 39991), (637, 28565), (985, 18473), (1015, 17927), (1379, 13195), (1421, 12805), (1885, 9653), (2561, 7105), (2639, 6895), (3185, 5713)]