21670784

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{433}}^1$

素因数の和:487

約数の個数: 64

約数和(自身を含む): 47809440

約数和(自身を除く): 26138656

約数列:

[1, 2, 4, 8, 16, 17, 23, 32, 34, 46, 64, 68, 92, 128, 136, 184, 272, 368, 391, 433, 544, 736, 782, 866, 1088, 1472, 1564, 1732, 2176, 2944, 3128, 3464, 6256, 6928, 7361, 9959, 12512, 13856, 14722, 19918, 25024, 27712, 29444, 39836, 50048, 55424, 58888, 79672, 117776, 159344, 169303, 235552, 318688, 338606, 471104, 637376, 677212, 942208, 1274752, 1354424, 2708848, 5417696, 10835392, 21670784]

約数ペア:

[(1, 21670784), (2, 10835392), (4, 5417696), (8, 2708848), (16, 1354424), (17, 1274752), (23, 942208), (32, 677212), (34, 637376), (46, 471104), (64, 338606), (68, 318688), (92, 235552), (128, 169303), (136, 159344), (184, 117776), (272, 79672), (368, 58888), (391, 55424), (433, 50048), (544, 39836), (736, 29444), (782, 27712), (866, 25024), (1088, 19918), (1472, 14722), (1564, 13856), (1732, 12512), (2176, 9959), (2944, 7361), (3128, 6928), (3464, 6256)]