39945780

素因数分解:

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

素因数の和:683

約数の個数: 144

約数和(自身を含む): 141523200

約数和(自身を除く): 101577420

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 490, 588, 630, 647, 686, 735, 882, 980, 1029, 1260, 1294, 1372, 1470, 1715, 1764, 1941, 2058, 2205, 2588, 2940, 3087, 3235, 3430, 3882, 4116, 4410, 4529, 5145, 5823, 6174, 6470, 6860, 7764, 8820, 9058, 9705, 10290, 11646, 12348, 12940, 13587, 15435, 18116, 19410, 20580, 22645, 23292, 27174, 29115, 30870, 31703, 38820, 40761, 45290, 54348, 58230, 61740, 63406, 67935, 81522, 90580, 95109, 116460, 126812, 135870, 158515, 163044, 190218, 203805, 221921, 271740, 285327, 317030, 380436, 407610, 443842, 475545, 570654, 634060, 665763, 815220, 887684, 951090, 1109605, 1141308, 1331526, 1426635, 1902180, 1997289, 2219210, 2663052, 2853270, 3328815, 3994578, 4438420, 5706540, 6657630, 7989156, 9986445, 13315260, 19972890, 39945780]

約数ペア:

[(1, 39945780), (2, 19972890), (3, 13315260), (4, 9986445), (5, 7989156), (6, 6657630), (7, 5706540), (9, 4438420), (10, 3994578), (12, 3328815), (14, 2853270), (15, 2663052), (18, 2219210), (20, 1997289), (21, 1902180), (28, 1426635), (30, 1331526), (35, 1141308), (36, 1109605), (42, 951090), (45, 887684), (49, 815220), (60, 665763), (63, 634060), (70, 570654), (84, 475545), (90, 443842), (98, 407610), (105, 380436), (126, 317030), (140, 285327), (147, 271740), (180, 221921), (196, 203805), (210, 190218), (245, 163044), (252, 158515), (294, 135870), (315, 126812), (343, 116460), (420, 95109), (441, 90580), (490, 81522), (588, 67935), (630, 63406), (647, 61740), (686, 58230), (735, 54348), (882, 45290), (980, 40761), (1029, 38820), (1260, 31703), (1294, 30870), (1372, 29115), (1470, 27174), (1715, 23292), (1764, 22645), (1941, 20580), (2058, 19410), (2205, 18116), (2588, 15435), (2940, 13587), (3087, 12940), (3235, 12348), (3430, 11646), (3882, 10290), (4116, 9705), (4410, 9058), (4529, 8820), (5145, 7764), (5823, 6860), (6174, 6470)]