18746847

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 33146880

約数和(自身を除く): 14400033

約数列:

[1, 3, 7, 9, 21, 29, 31, 63, 87, 93, 203, 217, 261, 279, 331, 609, 651, 899, 993, 1827, 1953, 2317, 2697, 2979, 6293, 6951, 8091, 9599, 10261, 18879, 20853, 28797, 30783, 56637, 67193, 71827, 86391, 92349, 201579, 215481, 297569, 604737, 646443, 892707, 2082983, 2678121, 6248949, 18746847]

約数ペア:

[(1, 18746847), (3, 6248949), (7, 2678121), (9, 2082983), (21, 892707), (29, 646443), (31, 604737), (63, 297569), (87, 215481), (93, 201579), (203, 92349), (217, 86391), (261, 71827), (279, 67193), (331, 56637), (609, 30783), (651, 28797), (899, 20853), (993, 18879), (1827, 10261), (1953, 9599), (2317, 8091), (2697, 6951), (2979, 6293)]