21000500384

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{213281}}^1$

素因数の和:213489

約数の個数: 48

約数和(自身を含む): 44018845416

約数和(自身を除く): 23018345032

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 181, 272, 362, 544, 724, 1448, 2896, 3077, 5792, 6154, 12308, 24616, 49232, 98464, 213281, 426562, 853124, 1706248, 3412496, 3625777, 6824992, 7251554, 14503108, 29006216, 38603861, 58012432, 77207722, 116024864, 154415444, 308830888, 617661776, 656265637, 1235323552, 1312531274, 2625062548, 5250125096, 10500250192, 21000500384]

約数ペア:

[(1, 21000500384), (2, 10500250192), (4, 5250125096), (8, 2625062548), (16, 1312531274), (17, 1235323552), (32, 656265637), (34, 617661776), (68, 308830888), (136, 154415444), (181, 116024864), (272, 77207722), (362, 58012432), (544, 38603861), (724, 29006216), (1448, 14503108), (2896, 7251554), (3077, 6824992), (5792, 3625777), (6154, 3412496), (12308, 1706248), (24616, 853124), (49232, 426562), (98464, 213281)]