20555535

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2$

素因数の和:113

約数の個数: 96

約数和(自身を含む): 45384192

約数和(自身を除く): 24828657

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 37, 39, 55, 65, 77, 91, 105, 111, 143, 165, 185, 195, 231, 259, 273, 385, 407, 429, 455, 481, 555, 715, 777, 1001, 1155, 1221, 1295, 1365, 1369, 1443, 2035, 2145, 2405, 2849, 3003, 3367, 3885, 4107, 5005, 5291, 6105, 6845, 7215, 8547, 9583, 10101, 14245, 15015, 15059, 15873, 16835, 17797, 20535, 26455, 28749, 37037, 42735, 45177, 47915, 50505, 53391, 75295, 79365, 88985, 105413, 111111, 124579, 143745, 185185, 195767, 225885, 266955, 316239, 373737, 527065, 555555, 587301, 622895, 978835, 1370369, 1581195, 1868685, 2936505, 4111107, 6851845, 20555535]

約数ペア:

[(1, 20555535), (3, 6851845), (5, 4111107), (7, 2936505), (11, 1868685), (13, 1581195), (15, 1370369), (21, 978835), (33, 622895), (35, 587301), (37, 555555), (39, 527065), (55, 373737), (65, 316239), (77, 266955), (91, 225885), (105, 195767), (111, 185185), (143, 143745), (165, 124579), (185, 111111), (195, 105413), (231, 88985), (259, 79365), (273, 75295), (385, 53391), (407, 50505), (429, 47915), (455, 45177), (481, 42735), (555, 37037), (715, 28749), (777, 26455), (1001, 20535), (1155, 17797), (1221, 16835), (1295, 15873), (1365, 15059), (1369, 15015), (1443, 14245), (2035, 10101), (2145, 9583), (2405, 8547), (2849, 7215), (3003, 6845), (3367, 6105), (3885, 5291), (4107, 5005)]