21079512

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^2\times {\mathrm{811}}^1$

素因数の和:861

約数の個数: 72

約数和(自身を含む): 60327540

約数和(自身を除く): 39248028

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 57, 72, 76, 114, 152, 171, 228, 342, 361, 456, 684, 722, 811, 1083, 1368, 1444, 1622, 2166, 2433, 2888, 3244, 3249, 4332, 4866, 6488, 6498, 7299, 8664, 9732, 12996, 14598, 15409, 19464, 25992, 29196, 30818, 46227, 58392, 61636, 92454, 123272, 138681, 184908, 277362, 292771, 369816, 554724, 585542, 878313, 1109448, 1171084, 1756626, 2342168, 2634939, 3513252, 5269878, 7026504, 10539756, 21079512]

約数ペア:

[(1, 21079512), (2, 10539756), (3, 7026504), (4, 5269878), (6, 3513252), (8, 2634939), (9, 2342168), (12, 1756626), (18, 1171084), (19, 1109448), (24, 878313), (36, 585542), (38, 554724), (57, 369816), (72, 292771), (76, 277362), (114, 184908), (152, 138681), (171, 123272), (228, 92454), (342, 61636), (361, 58392), (456, 46227), (684, 30818), (722, 29196), (811, 25992), (1083, 19464), (1368, 15409), (1444, 14598), (1622, 12996), (2166, 9732), (2433, 8664), (2888, 7299), (3244, 6498), (3249, 6488), (4332, 4866)]