261943552

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2539}}^1$

素因数の和:2599

約数の個数: 72

約数和(自身を含む): 581477120

約数和(自身を除く): 319533568

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 208, 248, 256, 403, 416, 496, 806, 832, 992, 1612, 1664, 1984, 2539, 3224, 3328, 3968, 5078, 6448, 7936, 10156, 12896, 20312, 25792, 33007, 40624, 51584, 66014, 78709, 81248, 103168, 132028, 157418, 162496, 264056, 314836, 324992, 528112, 629672, 649984, 1023217, 1056224, 1259344, 2046434, 2112448, 2518688, 4092868, 4224896, 5037376, 8185736, 8449792, 10074752, 16371472, 20149504, 32742944, 65485888, 130971776, 261943552]

約数ペア:

[(1, 261943552), (2, 130971776), (4, 65485888), (8, 32742944), (13, 20149504), (16, 16371472), (26, 10074752), (31, 8449792), (32, 8185736), (52, 5037376), (62, 4224896), (64, 4092868), (104, 2518688), (124, 2112448), (128, 2046434), (208, 1259344), (248, 1056224), (256, 1023217), (403, 649984), (416, 629672), (496, 528112), (806, 324992), (832, 314836), (992, 264056), (1612, 162496), (1664, 157418), (1984, 132028), (2539, 103168), (3224, 81248), (3328, 78709), (3968, 66014), (5078, 51584), (6448, 40624), (7936, 33007), (10156, 25792), (12896, 20312)]