21064004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 20707516

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 73, 124, 146, 179, 292, 358, 403, 716, 806, 949, 1612, 1898, 2263, 2327, 3796, 4526, 4654, 5549, 9052, 9308, 11098, 13067, 22196, 26134, 29419, 52268, 58838, 72137, 117676, 144274, 169871, 288548, 339742, 405077, 679484, 810154, 1620308, 5266001, 10532002, 21064004]

約数ペア:

[(1, 21064004), (2, 10532002), (4, 5266001), (13, 1620308), (26, 810154), (31, 679484), (52, 405077), (62, 339742), (73, 288548), (124, 169871), (146, 144274), (179, 117676), (292, 72137), (358, 58838), (403, 52268), (716, 29419), (806, 26134), (949, 22196), (1612, 13067), (1898, 11098), (2263, 9308), (2327, 9052), (3796, 5549), (4526, 4654)]