81793740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:716

約数の個数: 144

約数和(自身を含む): 273030912

約数和(自身を除く): 191237172

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 43, 49, 60, 70, 84, 86, 98, 105, 129, 140, 147, 172, 196, 210, 215, 245, 258, 294, 301, 420, 430, 490, 516, 588, 602, 645, 647, 735, 860, 903, 980, 1204, 1290, 1294, 1470, 1505, 1806, 1941, 2107, 2580, 2588, 2940, 3010, 3235, 3612, 3882, 4214, 4515, 4529, 6020, 6321, 6470, 7764, 8428, 9030, 9058, 9705, 10535, 12642, 12940, 13587, 18060, 18116, 19410, 21070, 22645, 25284, 27174, 27821, 31605, 31703, 38820, 42140, 45290, 54348, 55642, 63210, 63406, 67935, 83463, 90580, 95109, 111284, 126420, 126812, 135870, 139105, 158515, 166926, 190218, 194747, 271740, 278210, 317030, 333852, 380436, 389494, 417315, 475545, 556420, 584241, 634060, 778988, 834630, 951090, 973735, 1168482, 1363229, 1669260, 1902180, 1947470, 2336964, 2726458, 2921205, 3894940, 4089687, 5452916, 5842410, 6816145, 8179374, 11684820, 13632290, 16358748, 20448435, 27264580, 40896870, 81793740]

約数ペア:

[(1, 81793740), (2, 40896870), (3, 27264580), (4, 20448435), (5, 16358748), (6, 13632290), (7, 11684820), (10, 8179374), (12, 6816145), (14, 5842410), (15, 5452916), (20, 4089687), (21, 3894940), (28, 2921205), (30, 2726458), (35, 2336964), (42, 1947470), (43, 1902180), (49, 1669260), (60, 1363229), (70, 1168482), (84, 973735), (86, 951090), (98, 834630), (105, 778988), (129, 634060), (140, 584241), (147, 556420), (172, 475545), (196, 417315), (210, 389494), (215, 380436), (245, 333852), (258, 317030), (294, 278210), (301, 271740), (420, 194747), (430, 190218), (490, 166926), (516, 158515), (588, 139105), (602, 135870), (645, 126812), (647, 126420), (735, 111284), (860, 95109), (903, 90580), (980, 83463), (1204, 67935), (1290, 63406), (1294, 63210), (1470, 55642), (1505, 54348), (1806, 45290), (1941, 42140), (2107, 38820), (2580, 31703), (2588, 31605), (2940, 27821), (3010, 27174), (3235, 25284), (3612, 22645), (3882, 21070), (4214, 19410), (4515, 18116), (4529, 18060), (6020, 13587), (6321, 12940), (6470, 12642), (7764, 10535), (8428, 9705), (9030, 9058)]