21041176

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 43480800

約数和(自身を除く): 22439624

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 169, 197, 316, 338, 394, 632, 676, 788, 1027, 1352, 1576, 2054, 2561, 4108, 5122, 8216, 10244, 13351, 15563, 20488, 26702, 31126, 33293, 53404, 62252, 66586, 106808, 124504, 133172, 202319, 266344, 404638, 809276, 1618552, 2630147, 5260294, 10520588, 21041176]

約数ペア:

[(1, 21041176), (2, 10520588), (4, 5260294), (8, 2630147), (13, 1618552), (26, 809276), (52, 404638), (79, 266344), (104, 202319), (158, 133172), (169, 124504), (197, 106808), (316, 66586), (338, 62252), (394, 53404), (632, 33293), (676, 31126), (788, 26702), (1027, 20488), (1352, 15563), (1576, 13351), (2054, 10244), (2561, 8216), (4108, 5122)]