19891305

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 42900480

約数和(自身を除く): 23009175

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 49, 63, 93, 97, 105, 135, 147, 155, 189, 217, 245, 279, 291, 315, 441, 465, 485, 651, 679, 735, 837, 873, 945, 1085, 1323, 1395, 1455, 1519, 1953, 2037, 2205, 2619, 3007, 3255, 3395, 4185, 4365, 4557, 4753, 5859, 6111, 6615, 7595, 9021, 9765, 10185, 13095, 13671, 14259, 15035, 18333, 21049, 22785, 23765, 27063, 29295, 30555, 41013, 42777, 45105, 63147, 68355, 71295, 81189, 91665, 105245, 128331, 135315, 147343, 189441, 205065, 213885, 315735, 405945, 442029, 568323, 641655, 736715, 947205, 1326087, 2210145, 2841615, 3978261, 6630435, 19891305]

約数ペア:

[(1, 19891305), (3, 6630435), (5, 3978261), (7, 2841615), (9, 2210145), (15, 1326087), (21, 947205), (27, 736715), (31, 641655), (35, 568323), (45, 442029), (49, 405945), (63, 315735), (93, 213885), (97, 205065), (105, 189441), (135, 147343), (147, 135315), (155, 128331), (189, 105245), (217, 91665), (245, 81189), (279, 71295), (291, 68355), (315, 63147), (441, 45105), (465, 42777), (485, 41013), (651, 30555), (679, 29295), (735, 27063), (837, 23765), (873, 22785), (945, 21049), (1085, 18333), (1323, 15035), (1395, 14259), (1455, 13671), (1519, 13095), (1953, 10185), (2037, 9765), (2205, 9021), (2619, 7595), (3007, 6615), (3255, 6111), (3395, 5859), (4185, 4753), (4365, 4557)]