19949895

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:282

約数の個数: 80

約数和(自身を含む): 42375168

約数和(自身を除く): 22425273

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 63, 81, 93, 105, 135, 155, 189, 217, 227, 279, 315, 405, 465, 567, 651, 681, 837, 945, 1085, 1135, 1395, 1589, 1953, 2043, 2511, 2835, 3255, 3405, 4185, 4767, 5859, 6129, 7037, 7945, 9765, 10215, 12555, 14301, 17577, 18387, 21111, 23835, 29295, 30645, 35185, 42903, 49259, 63333, 71505, 87885, 91935, 105555, 128709, 147777, 189999, 214515, 246295, 316665, 443331, 569997, 643545, 738885, 949995, 1329993, 2216655, 2849985, 3989979, 6649965, 19949895]

約数ペア:

[(1, 19949895), (3, 6649965), (5, 3989979), (7, 2849985), (9, 2216655), (15, 1329993), (21, 949995), (27, 738885), (31, 643545), (35, 569997), (45, 443331), (63, 316665), (81, 246295), (93, 214515), (105, 189999), (135, 147777), (155, 128709), (189, 105555), (217, 91935), (227, 87885), (279, 71505), (315, 63333), (405, 49259), (465, 42903), (567, 35185), (651, 30645), (681, 29295), (837, 23835), (945, 21111), (1085, 18387), (1135, 17577), (1395, 14301), (1589, 12555), (1953, 10215), (2043, 9765), (2511, 7945), (2835, 7037), (3255, 6129), (3405, 5859), (4185, 4767)]