19578016

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:146

約数の個数: 72

約数和(自身を含む): 42937020

約数和(自身を除く): 23359004

約数列:

[1, 2, 4, 8, 16, 17, 29, 32, 34, 58, 68, 73, 116, 136, 146, 232, 272, 289, 292, 464, 493, 544, 578, 584, 928, 986, 1156, 1168, 1241, 1972, 2117, 2312, 2336, 2482, 3944, 4234, 4624, 4964, 7888, 8381, 8468, 9248, 9928, 15776, 16762, 16936, 19856, 21097, 33524, 33872, 35989, 39712, 42194, 67048, 67744, 71978, 84388, 134096, 143956, 168776, 268192, 287912, 337552, 575824, 611813, 675104, 1151648, 1223626, 2447252, 4894504, 9789008, 19578016]

約数ペア:

[(1, 19578016), (2, 9789008), (4, 4894504), (8, 2447252), (16, 1223626), (17, 1151648), (29, 675104), (32, 611813), (34, 575824), (58, 337552), (68, 287912), (73, 268192), (116, 168776), (136, 143956), (146, 134096), (232, 84388), (272, 71978), (289, 67744), (292, 67048), (464, 42194), (493, 39712), (544, 35989), (578, 33872), (584, 33524), (928, 21097), (986, 19856), (1156, 16936), (1168, 16762), (1241, 15776), (1972, 9928), (2117, 9248), (2312, 8468), (2336, 8381), (2482, 7888), (3944, 4964), (4234, 4624)]