388987984

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4447}}^1$

素因数の和:4544

約数の個数: 80

約数和(自身を含む): 953081856

約数和(自身を除く): 564093872

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 71, 77, 88, 112, 142, 154, 176, 284, 308, 497, 568, 616, 781, 994, 1136, 1232, 1562, 1988, 3124, 3976, 4447, 5467, 6248, 7952, 8894, 10934, 12496, 17788, 21868, 31129, 35576, 43736, 48917, 62258, 71152, 87472, 97834, 124516, 195668, 249032, 315737, 342419, 391336, 498064, 631474, 684838, 782672, 1262948, 1369676, 2210159, 2525896, 2739352, 3473107, 4420318, 5051792, 5478704, 6946214, 8840636, 13892428, 17681272, 24311749, 27784856, 35362544, 48623498, 55569712, 97246996, 194493992, 388987984]

約数ペア:

[(1, 388987984), (2, 194493992), (4, 97246996), (7, 55569712), (8, 48623498), (11, 35362544), (14, 27784856), (16, 24311749), (22, 17681272), (28, 13892428), (44, 8840636), (56, 6946214), (71, 5478704), (77, 5051792), (88, 4420318), (112, 3473107), (142, 2739352), (154, 2525896), (176, 2210159), (284, 1369676), (308, 1262948), (497, 782672), (568, 684838), (616, 631474), (781, 498064), (994, 391336), (1136, 342419), (1232, 315737), (1562, 249032), (1988, 195668), (3124, 124516), (3976, 97834), (4447, 87472), (5467, 71152), (6248, 62258), (7952, 48917), (8894, 43736), (10934, 35576), (12496, 31129), (17788, 21868)]