18428949

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 35212320

約数和(自身を除く): 16783371

約数列:

[1, 3, 7, 9, 11, 21, 29, 33, 49, 63, 77, 87, 99, 131, 147, 203, 231, 261, 319, 393, 441, 539, 609, 693, 917, 957, 1179, 1421, 1441, 1617, 1827, 2233, 2751, 2871, 3799, 4263, 4323, 4851, 6419, 6699, 8253, 10087, 11397, 12789, 12969, 15631, 19257, 20097, 26593, 30261, 34191, 41789, 46893, 57771, 70609, 79779, 90783, 125367, 140679, 186151, 211827, 239337, 292523, 376101, 558453, 635481, 877569, 1675359, 2047661, 2632707, 6142983, 18428949]

約数ペア:

[(1, 18428949), (3, 6142983), (7, 2632707), (9, 2047661), (11, 1675359), (21, 877569), (29, 635481), (33, 558453), (49, 376101), (63, 292523), (77, 239337), (87, 211827), (99, 186151), (131, 140679), (147, 125367), (203, 90783), (231, 79779), (261, 70609), (319, 57771), (393, 46893), (441, 41789), (539, 34191), (609, 30261), (693, 26593), (917, 20097), (957, 19257), (1179, 15631), (1421, 12969), (1441, 12789), (1617, 11397), (1827, 10087), (2233, 8253), (2751, 6699), (2871, 6419), (3799, 4851), (4263, 4323)]