399353416

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:515

約数の個数: 128

約数和(自身を含む): 990351360

約数和(自身を除く): 590997944

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 23, 28, 44, 46, 56, 71, 77, 88, 92, 142, 154, 161, 184, 253, 284, 308, 322, 397, 497, 506, 568, 616, 644, 781, 794, 994, 1012, 1288, 1562, 1588, 1633, 1771, 1988, 2024, 2779, 3124, 3176, 3266, 3542, 3976, 4367, 5467, 5558, 6248, 6532, 7084, 8734, 9131, 10934, 11116, 11431, 13064, 14168, 17468, 17963, 18262, 21868, 22232, 22862, 28187, 30569, 34936, 35926, 36524, 43736, 45724, 56374, 61138, 63917, 71852, 73048, 91448, 100441, 112748, 122276, 125741, 127834, 143704, 197309, 200882, 225496, 244552, 251482, 255668, 310057, 394618, 401764, 502964, 511336, 620114, 648301, 703087, 789236, 803528, 1005928, 1240228, 1296602, 1406174, 1578472, 2170399, 2480456, 2593204, 2812348, 4340798, 4538107, 5186408, 5624696, 7131311, 8681596, 9076214, 14262622, 17363192, 18152428, 28525244, 36304856, 49919177, 57050488, 99838354, 199676708, 399353416]

約数ペア:

[(1, 399353416), (2, 199676708), (4, 99838354), (7, 57050488), (8, 49919177), (11, 36304856), (14, 28525244), (22, 18152428), (23, 17363192), (28, 14262622), (44, 9076214), (46, 8681596), (56, 7131311), (71, 5624696), (77, 5186408), (88, 4538107), (92, 4340798), (142, 2812348), (154, 2593204), (161, 2480456), (184, 2170399), (253, 1578472), (284, 1406174), (308, 1296602), (322, 1240228), (397, 1005928), (497, 803528), (506, 789236), (568, 703087), (616, 648301), (644, 620114), (781, 511336), (794, 502964), (994, 401764), (1012, 394618), (1288, 310057), (1562, 255668), (1588, 251482), (1633, 244552), (1771, 225496), (1988, 200882), (2024, 197309), (2779, 143704), (3124, 127834), (3176, 125741), (3266, 122276), (3542, 112748), (3976, 100441), (4367, 91448), (5467, 73048), (5558, 71852), (6248, 63917), (6532, 61138), (7084, 56374), (8734, 45724), (9131, 43736), (10934, 36524), (11116, 35926), (11431, 34936), (13064, 30569), (14168, 28187), (17468, 22862), (17963, 22232), (18262, 21868)]