19981643742

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{539141}}^1$

素因数の和:539249

約数の個数: 48

約数和(自身を含む): 45417322080

約数和(自身を除く): 25435678338

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 71, 87, 142, 174, 213, 261, 426, 522, 639, 1278, 2059, 4118, 6177, 12354, 18531, 37062, 539141, 1078282, 1617423, 3234846, 4852269, 9704538, 15635089, 31270178, 38279011, 46905267, 76558022, 93810534, 114837033, 140715801, 229674066, 281431602, 344511099, 689022198, 1110091319, 2220182638, 3330273957, 6660547914, 9990821871, 19981643742]

約数ペア:

[(1, 19981643742), (2, 9990821871), (3, 6660547914), (6, 3330273957), (9, 2220182638), (18, 1110091319), (29, 689022198), (58, 344511099), (71, 281431602), (87, 229674066), (142, 140715801), (174, 114837033), (213, 93810534), (261, 76558022), (426, 46905267), (522, 38279011), (639, 31270178), (1278, 15635089), (2059, 9704538), (4118, 4852269), (6177, 3234846), (12354, 1617423), (18531, 1078282), (37062, 539141)]