20855835

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{463}}^1$

素因数の和:505

約数の個数: 96

約数和(自身を含む): 48642048

約数和(自身を除く): 27786213

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 33, 35, 39, 45, 55, 63, 65, 77, 91, 99, 105, 117, 143, 165, 195, 231, 273, 315, 385, 429, 455, 463, 495, 585, 693, 715, 819, 1001, 1155, 1287, 1365, 1389, 2145, 2315, 3003, 3241, 3465, 4095, 4167, 5005, 5093, 6019, 6435, 6945, 9009, 9723, 15015, 15279, 16205, 18057, 20835, 25465, 29169, 30095, 35651, 42133, 45045, 45837, 48615, 54171, 66209, 76395, 90285, 106953, 126399, 145845, 178255, 198627, 210665, 229185, 270855, 320859, 331045, 379197, 463463, 534765, 595881, 631995, 993135, 1390389, 1604295, 1895985, 2317315, 2979405, 4171167, 6951945, 20855835]

約数ペア:

[(1, 20855835), (3, 6951945), (5, 4171167), (7, 2979405), (9, 2317315), (11, 1895985), (13, 1604295), (15, 1390389), (21, 993135), (33, 631995), (35, 595881), (39, 534765), (45, 463463), (55, 379197), (63, 331045), (65, 320859), (77, 270855), (91, 229185), (99, 210665), (105, 198627), (117, 178255), (143, 145845), (165, 126399), (195, 106953), (231, 90285), (273, 76395), (315, 66209), (385, 54171), (429, 48615), (455, 45837), (463, 45045), (495, 42133), (585, 35651), (693, 30095), (715, 29169), (819, 25465), (1001, 20835), (1155, 18057), (1287, 16205), (1365, 15279), (1389, 15015), (2145, 9723), (2315, 9009), (3003, 6945), (3241, 6435), (3465, 6019), (4095, 5093), (4167, 5005)]