21508448

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{347}}^1$

素因数の和:519

約数の個数: 48

約数和(自身を含む): 46040400

約数和(自身を除く): 24531952

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 149, 208, 298, 347, 416, 596, 694, 1192, 1388, 1937, 2384, 2776, 3874, 4511, 4768, 5552, 7748, 9022, 11104, 15496, 18044, 30992, 36088, 51703, 61984, 72176, 103406, 144352, 206812, 413624, 672139, 827248, 1344278, 1654496, 2688556, 5377112, 10754224, 21508448]

約数ペア:

[(1, 21508448), (2, 10754224), (4, 5377112), (8, 2688556), (13, 1654496), (16, 1344278), (26, 827248), (32, 672139), (52, 413624), (104, 206812), (149, 144352), (208, 103406), (298, 72176), (347, 61984), (416, 51703), (596, 36088), (694, 30992), (1192, 18044), (1388, 15496), (1937, 11104), (2384, 9022), (2776, 7748), (3874, 5552), (4511, 4768)]