1989545404

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1080

約数の個数: 144

約数和(自身を含む): 4757186560

約数和(自身を除く): 2767641156

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 31, 38, 44, 62, 76, 77, 121, 124, 133, 154, 209, 217, 242, 266, 308, 341, 418, 434, 484, 532, 589, 682, 836, 847, 868, 997, 1178, 1364, 1463, 1694, 1994, 2299, 2356, 2387, 2926, 3388, 3751, 3988, 4123, 4598, 4774, 5852, 6479, 6979, 7502, 8246, 9196, 9548, 10967, 12958, 13958, 15004, 16093, 16492, 18943, 21934, 25916, 26257, 27916, 30907, 32186, 37886, 43868, 45353, 52514, 61814, 64372, 71269, 75772, 76769, 90706, 105028, 120637, 123628, 132601, 142538, 153538, 181412, 208373, 216349, 241274, 265202, 285076, 307076, 339977, 416746, 432698, 482548, 498883, 530404, 587233, 679954, 833492, 844459, 865396, 997766, 1174466, 1359908, 1458611, 1688918, 1995532, 2292103, 2348932, 2379839, 2917222, 3377836, 3739747, 4110631, 4584206, 4759678, 5834444, 6459563, 7479494, 8221262, 9168412, 9519356, 12919126, 14958988, 16044721, 16442524, 25838252, 26178229, 32089442, 45216941, 52356458, 64178884, 71055193, 90433882, 104712916, 142110386, 180867764, 284220772, 497386351, 994772702, 1989545404]

約数ペア:

[(1, 1989545404), (2, 994772702), (4, 497386351), (7, 284220772), (11, 180867764), (14, 142110386), (19, 104712916), (22, 90433882), (28, 71055193), (31, 64178884), (38, 52356458), (44, 45216941), (62, 32089442), (76, 26178229), (77, 25838252), (121, 16442524), (124, 16044721), (133, 14958988), (154, 12919126), (209, 9519356), (217, 9168412), (242, 8221262), (266, 7479494), (308, 6459563), (341, 5834444), (418, 4759678), (434, 4584206), (484, 4110631), (532, 3739747), (589, 3377836), (682, 2917222), (836, 2379839), (847, 2348932), (868, 2292103), (997, 1995532), (1178, 1688918), (1364, 1458611), (1463, 1359908), (1694, 1174466), (1994, 997766), (2299, 865396), (2356, 844459), (2387, 833492), (2926, 679954), (3388, 587233), (3751, 530404), (3988, 498883), (4123, 482548), (4598, 432698), (4774, 416746), (5852, 339977), (6479, 307076), (6979, 285076), (7502, 265202), (8246, 241274), (9196, 216349), (9548, 208373), (10967, 181412), (12958, 153538), (13958, 142538), (15004, 132601), (16093, 123628), (16492, 120637), (18943, 105028), (21934, 90706), (25916, 76769), (26257, 75772), (27916, 71269), (30907, 64372), (32186, 61814), (37886, 52514), (43868, 45353)]