20696949

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{683}}^1$

素因数の和:746

約数の個数: 48

約数和(自身を含む): 37844352

約数和(自身を除く): 17147403

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 63, 91, 111, 117, 259, 273, 333, 481, 683, 777, 819, 1443, 2049, 2331, 3367, 4329, 4781, 6147, 8879, 10101, 14343, 25271, 26637, 30303, 43029, 62153, 75813, 79911, 176897, 186459, 227439, 328523, 530691, 559377, 985569, 1592073, 2299661, 2956707, 6898983, 20696949]

約数ペア:

[(1, 20696949), (3, 6898983), (7, 2956707), (9, 2299661), (13, 1592073), (21, 985569), (37, 559377), (39, 530691), (63, 328523), (91, 227439), (111, 186459), (117, 176897), (259, 79911), (273, 75813), (333, 62153), (481, 43029), (683, 30303), (777, 26637), (819, 25271), (1443, 14343), (2049, 10101), (2331, 8879), (3367, 6147), (4329, 4781)]