19013888

素因数分解:

$2^8\times {\mathrm{17}}^2\times {\mathrm{257}}^1$

素因数の和:307

約数の個数: 54

約数和(自身を含む): 40474266

約数和(自身を除く): 21460378

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 257, 272, 289, 514, 544, 578, 1028, 1088, 1156, 2056, 2176, 2312, 4112, 4352, 4369, 4624, 8224, 8738, 9248, 16448, 17476, 18496, 32896, 34952, 36992, 65792, 69904, 73984, 74273, 139808, 148546, 279616, 297092, 559232, 594184, 1118464, 1188368, 2376736, 4753472, 9506944, 19013888]

約数ペア:

[(1, 19013888), (2, 9506944), (4, 4753472), (8, 2376736), (16, 1188368), (17, 1118464), (32, 594184), (34, 559232), (64, 297092), (68, 279616), (128, 148546), (136, 139808), (256, 74273), (257, 73984), (272, 69904), (289, 65792), (514, 36992), (544, 34952), (578, 32896), (1028, 18496), (1088, 17476), (1156, 16448), (2056, 9248), (2176, 8738), (2312, 8224), (4112, 4624), (4352, 4369)]