18868473

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 31187520

約数和(自身を除く): 12319047

約数列:

[1, 3, 9, 13, 29, 39, 67, 83, 87, 117, 201, 249, 261, 377, 603, 747, 871, 1079, 1131, 1943, 2407, 2613, 3237, 3393, 5561, 5829, 7221, 7839, 9711, 16683, 17487, 21663, 25259, 31291, 50049, 72293, 75777, 93873, 161269, 216879, 227331, 281619, 483807, 650637, 1451421, 2096497, 6289491, 18868473]

約数ペア:

[(1, 18868473), (3, 6289491), (9, 2096497), (13, 1451421), (29, 650637), (39, 483807), (67, 281619), (83, 227331), (87, 216879), (117, 161269), (201, 93873), (249, 75777), (261, 72293), (377, 50049), (603, 31291), (747, 25259), (871, 21663), (1079, 17487), (1131, 16683), (1943, 9711), (2407, 7839), (2613, 7221), (3237, 5829), (3393, 5561)]