18843939

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 31000320

約数和(自身を除く): 12156381

約数列:

[1, 3, 9, 17, 29, 31, 51, 87, 93, 137, 153, 261, 279, 411, 493, 527, 899, 1233, 1479, 1581, 2329, 2697, 3973, 4247, 4437, 4743, 6987, 8091, 11919, 12741, 15283, 20961, 35757, 38223, 45849, 67541, 72199, 123163, 137547, 202623, 216597, 369489, 607869, 649791, 1108467, 2093771, 6281313, 18843939]

約数ペア:

[(1, 18843939), (3, 6281313), (9, 2093771), (17, 1108467), (29, 649791), (31, 607869), (51, 369489), (87, 216597), (93, 202623), (137, 137547), (153, 123163), (261, 72199), (279, 67541), (411, 45849), (493, 38223), (527, 35757), (899, 20961), (1233, 15283), (1479, 12741), (1581, 11919), (2329, 8091), (2697, 6987), (3973, 4743), (4247, 4437)]